diff --git a/frontend/src/Settings/Indexers/Indexers/EditIndexerModalContent.js b/frontend/src/Settings/Indexers/Indexers/EditIndexerModalContent.js
index 61b527358..deaa655a0 100644
--- a/frontend/src/Settings/Indexers/Indexers/EditIndexerModalContent.js
+++ b/frontend/src/Settings/Indexers/Indexers/EditIndexerModalContent.js
@@ -42,7 +42,8 @@ function EditIndexerModalContent(props) {
     enableInteractiveSearch,
     supportsRss,
     supportsSearch,
-    fields
+    fields,
+    priority
   } = item;
 
   return (
@@ -131,7 +132,21 @@ function EditIndexerModalContent(props) {
                   );
                 })
               }
+               <FormGroup
+                  advancedSettings={advancedSettings}
+                  isAdvanced={true}>
+                <FormLabel>Indexer Priority</FormLabel>
 
+                <FormInputGroup
+                  type={inputTypes.NUMBER}
+                  name="priority"
+                  helpText="Indexer Priority from 1 (Highest) to 50 (Lowest). Default: 25."
+                  min={1}
+                  max={50}
+                  {...priority}
+                  onChange={onInputChange}
+                />
+              </FormGroup>
             </Form>
         }
       </ModalBody>
diff --git a/frontend/src/Settings/Indexers/Indexers/Indexer.js b/frontend/src/Settings/Indexers/Indexers/Indexer.js
index a3018f353..5c1fc7700 100644
--- a/frontend/src/Settings/Indexers/Indexers/Indexer.js
+++ b/frontend/src/Settings/Indexers/Indexers/Indexer.js
@@ -68,7 +68,9 @@ class Indexer extends Component {
       enableAutomaticSearch,
       enableInteractiveSearch,
       supportsRss,
-      supportsSearch
+      supportsSearch,
+      priority,
+      showPriority
     } = this.props;
 
     return (
@@ -112,7 +114,13 @@ class Indexer extends Component {
                 Interactive Search
               </Label>
           }
-
+          
+          {
+            showPriority &&
+              <Label kind={kinds.DEFAULT}>
+                Priority: {priority}
+              </Label>
+          }
           {
             !enableRss && !enableAutomaticSearch && !enableInteractiveSearch &&
             <Label
diff --git a/frontend/src/Settings/Indexers/Indexers/Indexers.js b/frontend/src/Settings/Indexers/Indexers/Indexers.js
index 734700d2d..ec0077241 100644
--- a/frontend/src/Settings/Indexers/Indexers/Indexers.js
+++ b/frontend/src/Settings/Indexers/Indexers/Indexers.js
@@ -62,6 +62,8 @@ class Indexers extends Component {
       isAddIndexerModalOpen,
       isEditIndexerModalOpen
     } = this.state;
+    
+    const showPriority = items.some((index) => index.priority != 25);
 
     return (
       <FieldSet legend="Indexers">
@@ -76,6 +78,7 @@ class Indexers extends Component {
                   <Indexer
                     key={item.id}
                     {...item}
+                    showPriority={showPriority}
                     onCloneIndexerPress={this.onCloneIndexerPress}
                     onConfirmDeleteIndexer={onConfirmDeleteIndexer}
                   />
diff --git a/src/NzbDrone.Api/Indexers/IndexerModule.cs b/src/NzbDrone.Api/Indexers/IndexerModule.cs
index 02daa7708..fff6bcc02 100644
--- a/src/NzbDrone.Api/Indexers/IndexerModule.cs
+++ b/src/NzbDrone.Api/Indexers/IndexerModule.cs
@@ -18,6 +18,7 @@ namespace NzbDrone.Api.Indexers
             resource.SupportsRss = definition.SupportsRss;
             resource.SupportsSearch = definition.SupportsSearch;
             resource.Protocol = definition.Protocol;
+            resource.Priority = definition.Priority;
         }
 
         protected override void MapToModel(IndexerDefinition definition, IndexerResource resource)
@@ -27,6 +28,7 @@ namespace NzbDrone.Api.Indexers
             definition.EnableRss = resource.EnableRss;
             definition.EnableAutomaticSearch = resource.EnableSearch;
             definition.EnableInteractiveSearch = resource.EnableSearch;
+            definition.Priority = resource.Priority;
         }
 
         protected override void Validate(IndexerDefinition definition, bool includeWarnings)
diff --git a/src/NzbDrone.Api/Indexers/IndexerResource.cs b/src/NzbDrone.Api/Indexers/IndexerResource.cs
index befdeb1fd..781590335 100644
--- a/src/NzbDrone.Api/Indexers/IndexerResource.cs
+++ b/src/NzbDrone.Api/Indexers/IndexerResource.cs
@@ -9,5 +9,6 @@ namespace NzbDrone.Api.Indexers
         public bool SupportsRss { get; set; }
         public bool SupportsSearch { get; set; }
         public DownloadProtocol Protocol { get; set; }
+        public int Priority { get; set; }
     }
 }
diff --git a/src/NzbDrone.Core.Test/DecisionEngineTests/PrioritizeDownloadDecisionFixture.cs b/src/NzbDrone.Core.Test/DecisionEngineTests/PrioritizeDownloadDecisionFixture.cs
index b6cca71f8..0b27f6160 100644
--- a/src/NzbDrone.Core.Test/DecisionEngineTests/PrioritizeDownloadDecisionFixture.cs
+++ b/src/NzbDrone.Core.Test/DecisionEngineTests/PrioritizeDownloadDecisionFixture.cs
@@ -38,7 +38,7 @@ namespace NzbDrone.Core.Test.DecisionEngineTests
                             .Build();
         }
 
-        private RemoteEpisode GivenRemoteEpisode(List<Episode> episodes, QualityModel quality, Language language, int age = 0, long size = 0, DownloadProtocol downloadProtocol = DownloadProtocol.Usenet)
+        private RemoteEpisode GivenRemoteEpisode(List<Episode> episodes, QualityModel quality, Language language, int age = 0, long size = 0, DownloadProtocol downloadProtocol = DownloadProtocol.Usenet, int indexerPriority = 25)
         {
             var remoteEpisode = new RemoteEpisode();
             remoteEpisode.ParsedEpisodeInfo = new ParsedEpisodeInfo();
@@ -52,6 +52,7 @@ namespace NzbDrone.Core.Test.DecisionEngineTests
             remoteEpisode.Release.PublishDate = DateTime.Now.AddDays(-age);
             remoteEpisode.Release.Size = size;
             remoteEpisode.Release.DownloadProtocol = downloadProtocol;
+            remoteEpisode.Release.IndexerPriority = indexerPriority;
 
             remoteEpisode.Series = Builder<Series>.CreateNew()
                                                   .With(e => e.QualityProfile = new QualityProfile
@@ -573,5 +574,39 @@ namespace NzbDrone.Core.Test.DecisionEngineTests
             qualifiedReports.First().RemoteEpisode.ParsedEpisodeInfo.Quality.Revision.Real.Should().Be(0);
             qualifiedReports.First().RemoteEpisode.PreferredWordScore.Should().Be(10);
         }
+
+        [Test]
+        public void sort_download_decisions_based_on_indexer_priority()
+        {
+            var remoteEpisode1 = GivenRemoteEpisode(new List<Episode> { GivenEpisode(1) }, new QualityModel(Quality.WEBDL1080p, new Revision(1)), Language.English, indexerPriority: 25);
+            var remoteEpisode2 = GivenRemoteEpisode(new List<Episode> { GivenEpisode(1) }, new QualityModel(Quality.WEBDL1080p, new Revision(1)), Language.English, indexerPriority: 50);
+            var remoteEpisode3 = GivenRemoteEpisode(new List<Episode> { GivenEpisode(1) }, new QualityModel(Quality.WEBDL1080p, new Revision(1)), Language.English, indexerPriority: 1);
+
+            var decisions = new List<DownloadDecision>();
+            decisions.AddRange(new [] { new DownloadDecision(remoteEpisode1), new DownloadDecision(remoteEpisode2), new DownloadDecision(remoteEpisode3) });
+
+            var qualifiedReports = Subject.PrioritizeDecisions(decisions);
+            qualifiedReports.First().RemoteEpisode.Should().Be(remoteEpisode3);
+            qualifiedReports.Skip(1).First().RemoteEpisode.Should().Be(remoteEpisode1);
+            qualifiedReports.Last().RemoteEpisode.Should().Be(remoteEpisode2);
+        }
+
+        [Test]
+        public void ensure_download_decisions_indexer_priority_is_not_perfered_over_quality()
+        {
+            var remoteEpisode1 = GivenRemoteEpisode(new List<Episode> { GivenEpisode(1) }, new QualityModel(Quality.HDTV720p, new Revision(1)), Language.English, indexerPriority: 25);
+            var remoteEpisode2 = GivenRemoteEpisode(new List<Episode> { GivenEpisode(1) }, new QualityModel(Quality.WEBDL1080p, new Revision(1)), Language.English, indexerPriority: 50);
+            var remoteEpisode3 = GivenRemoteEpisode(new List<Episode> { GivenEpisode(1) }, new QualityModel(Quality.SDTV, new Revision(1)), Language.English, indexerPriority: 1);
+            var remoteEpisode4 = GivenRemoteEpisode(new List<Episode> { GivenEpisode(1) }, new QualityModel(Quality.WEBDL1080p, new Revision(1)), Language.English, indexerPriority: 25);
+
+            var decisions = new List<DownloadDecision>();
+            decisions.AddRange(new[] { new DownloadDecision(remoteEpisode1), new DownloadDecision(remoteEpisode2), new DownloadDecision(remoteEpisode3), new DownloadDecision(remoteEpisode4) });
+
+            var qualifiedReports = Subject.PrioritizeDecisions(decisions);
+            qualifiedReports.First().RemoteEpisode.Should().Be(remoteEpisode4);
+            qualifiedReports.Skip(1).First().RemoteEpisode.Should().Be(remoteEpisode2);
+            qualifiedReports.Skip(2).First().RemoteEpisode.Should().Be(remoteEpisode1);
+            qualifiedReports.Last().RemoteEpisode.Should().Be(remoteEpisode3);
+        }
     }
 }
diff --git a/src/NzbDrone.Core/Datastore/Migration/143_add_priority_to_indexers.cs b/src/NzbDrone.Core/Datastore/Migration/143_add_priority_to_indexers.cs
new file mode 100644
index 000000000..a2326e5af
--- /dev/null
+++ b/src/NzbDrone.Core/Datastore/Migration/143_add_priority_to_indexers.cs
@@ -0,0 +1,14 @@
+using FluentMigrator;
+using NzbDrone.Core.Datastore.Migration.Framework;
+
+namespace NzbDrone.Core.Datastore.Migration
+{
+    [Migration(143)]
+    public class add_priority_to_indexers : NzbDroneMigrationBase
+    {
+        protected override void MainDbUpgrade()
+        {
+            Alter.Table("Indexers").AddColumn("Priority").AsInt32().NotNullable().WithDefaultValue(25);
+        }
+    }
+}
diff --git a/src/NzbDrone.Core/DecisionEngine/DownloadDecisionComparer.cs b/src/NzbDrone.Core/DecisionEngine/DownloadDecisionComparer.cs
index 05f23324a..89728774b 100644
--- a/src/NzbDrone.Core/DecisionEngine/DownloadDecisionComparer.cs
+++ b/src/NzbDrone.Core/DecisionEngine/DownloadDecisionComparer.cs
@@ -34,6 +34,7 @@ namespace NzbDrone.Core.DecisionEngine
                 CompareProtocol,
                 CompareEpisodeCount,
                 CompareEpisodeNumber,
+                CompareIndexerPriority,
                 ComparePeersIfTorrent,
                 CompareAgeIfUsenet,
                 CompareSize
@@ -62,6 +63,11 @@ namespace NzbDrone.Core.DecisionEngine
             return comparers.Select(comparer => comparer).FirstOrDefault(result => result != 0);
         }
 
+        private int CompareIndexerPriority(DownloadDecision x, DownloadDecision y)
+        {
+            return CompareByReverse(x.RemoteEpisode.Release, y.RemoteEpisode.Release, release => release.IndexerPriority);
+        }
+
         private int CompareQuality(DownloadDecision x, DownloadDecision y)
         {
             if (_configService.DownloadPropersAndRepacks == ProperDownloadTypes.DoNotPrefer)
diff --git a/src/NzbDrone.Core/Download/ProcessDownloadDecisions.cs b/src/NzbDrone.Core/Download/ProcessDownloadDecisions.cs
index eebb59d2b..1b37954cb 100644
--- a/src/NzbDrone.Core/Download/ProcessDownloadDecisions.cs
+++ b/src/NzbDrone.Core/Download/ProcessDownloadDecisions.cs
@@ -73,6 +73,7 @@ namespace NzbDrone.Core.Download
 
                 try
                 {
+                    _logger.Trace("Grabbing from Indexer {0} at priority {1}.", remoteEpisode.Release.Indexer, remoteEpisode.Release.IndexerPriority);
                     _downloadService.DownloadReport(remoteEpisode);
                     grabbed.Add(report);
                 }
diff --git a/src/NzbDrone.Core/Indexers/IndexerBase.cs b/src/NzbDrone.Core/Indexers/IndexerBase.cs
index 4095eb28d..539e1e790 100644
--- a/src/NzbDrone.Core/Indexers/IndexerBase.cs
+++ b/src/NzbDrone.Core/Indexers/IndexerBase.cs
@@ -22,6 +22,7 @@ namespace NzbDrone.Core.Indexers
 
         public abstract string Name { get; }
         public abstract DownloadProtocol Protocol { get; }
+        public int Priority { get; set; }
 
         public abstract bool SupportsRss { get; }
         public abstract bool SupportsSearch { get; }
@@ -79,6 +80,7 @@ namespace NzbDrone.Core.Indexers
                 c.IndexerId = Definition.Id;
                 c.Indexer = Definition.Name;
                 c.DownloadProtocol = Protocol;
+                c.IndexerPriority = ((IndexerDefinition)Definition).Priority;
             });
 
             return result;
diff --git a/src/NzbDrone.Core/Indexers/IndexerDefinition.cs b/src/NzbDrone.Core/Indexers/IndexerDefinition.cs
index 019a61727..3bcd56b52 100644
--- a/src/NzbDrone.Core/Indexers/IndexerDefinition.cs
+++ b/src/NzbDrone.Core/Indexers/IndexerDefinition.cs
@@ -10,6 +10,7 @@ namespace NzbDrone.Core.Indexers
         public DownloadProtocol Protocol { get; set; }
         public bool SupportsRss { get; set; }
         public bool SupportsSearch { get; set; }
+        public int Priority { get; set; } = 25;
 
         public override bool Enable => EnableRss || EnableAutomaticSearch || EnableInteractiveSearch;
 
diff --git a/src/NzbDrone.Core/Parser/Model/ReleaseInfo.cs b/src/NzbDrone.Core/Parser/Model/ReleaseInfo.cs
index 7c1680196..364b37042 100644
--- a/src/NzbDrone.Core/Parser/Model/ReleaseInfo.cs
+++ b/src/NzbDrone.Core/Parser/Model/ReleaseInfo.cs
@@ -14,6 +14,7 @@ namespace NzbDrone.Core.Parser.Model
         public string CommentUrl { get; set; }
         public int IndexerId { get; set; }
         public string Indexer { get; set; }
+        public int IndexerPriority { get; set; }
         public DownloadProtocol DownloadProtocol { get; set; }
         public int TvdbId { get; set; }
         public int TvRageId { get; set; }
diff --git a/src/Sonarr.Api.V3/Indexers/IndexerResource.cs b/src/Sonarr.Api.V3/Indexers/IndexerResource.cs
index 7ca24731f..21865d413 100644
--- a/src/Sonarr.Api.V3/Indexers/IndexerResource.cs
+++ b/src/Sonarr.Api.V3/Indexers/IndexerResource.cs
@@ -10,6 +10,7 @@ namespace Sonarr.Api.V3.Indexers
         public bool SupportsRss { get; set; }
         public bool SupportsSearch { get; set; }
         public DownloadProtocol Protocol { get; set; }
+        public int Priority { get; set; }
     }
 
     public class IndexerResourceMapper : ProviderResourceMapper<IndexerResource, IndexerDefinition>
@@ -26,6 +27,7 @@ namespace Sonarr.Api.V3.Indexers
             resource.SupportsRss = definition.SupportsRss;
             resource.SupportsSearch = definition.SupportsSearch;
             resource.Protocol = definition.Protocol;
+            resource.Priority = definition.Priority;
 
             return resource;
         }
@@ -39,6 +41,7 @@ namespace Sonarr.Api.V3.Indexers
             definition.EnableRss = resource.EnableRss;
             definition.EnableAutomaticSearch = resource.EnableAutomaticSearch;
             definition.EnableInteractiveSearch = resource.EnableInteractiveSearch;
+            definition.Priority = resource.Priority;
 
             return definition;
         }