diff --git a/Cmdline/Action/Import.cs b/Cmdline/Action/Import.cs
new file mode 100644
index 0000000000..8d0819d5cc
--- /dev/null
+++ b/Cmdline/Action/Import.cs
@@ -0,0 +1,106 @@
+using System;
+using System.IO;
+using System.Collections.Generic;
+using log4net;
+
+namespace CKAN.CmdLine
+{
+
+    /// <summary>
+    /// Handler for "ckan import" command.
+    /// Imports manually downloaded ZIP files into the cache.
+    /// </summary>
+    public class Import : ICommand
+    {
+
+        /// <summary>
+        /// Initialize the command
+        /// </summary>
+        /// <param name="user">IUser object for user interaction</param>
+        public Import(IUser user)
+        {
+            this.user = user;
+        }
+
+        /// <summary>
+        /// Execute an import command
+        /// </summary>
+        /// <param name="ksp">Game instance into which to import</param>
+        /// <param name="options">Command line parameters from the user</param>
+        /// <returns>
+        /// Process exit code
+        /// </returns>
+        public int RunCommand(CKAN.KSP ksp, object options)
+        {
+            try
+            {
+                ImportOptions opts = options as ImportOptions;
+                HashSet<FileInfo> toImport = GetFiles(opts);
+                if (toImport.Count < 1)
+                {
+                    user.RaiseMessage("Usage: ckan import path [path2, ...]");
+                    return Exit.ERROR;
+                }
+                else
+                {
+                    log.InfoFormat("Importing {0} files", toImport.Count);
+                    List<string>    toInstall = new List<string>();
+                    ModuleInstaller inst      = ModuleInstaller.GetInstance(ksp, user);
+                    inst.ImportFiles(toImport, user, id => toInstall.Add(id), !opts.Headless);
+                    if (toInstall.Count > 0)
+                    {
+                        inst.InstallList(
+                            toInstall,
+                            new RelationshipResolverOptions()
+                        );
+                    }
+                    return Exit.OK;
+                }
+            }
+            catch (Exception ex)
+            {
+                user.RaiseError("Import error: {0}", ex.Message);
+                return Exit.ERROR;
+            }
+        }
+
+        private HashSet<FileInfo> GetFiles(ImportOptions options)
+        {
+            HashSet<FileInfo> files = new HashSet<FileInfo>();
+            foreach (string filename in options.paths)
+            {
+                if (Directory.Exists(filename))
+                {
+                    // Import everything in this folder
+                    log.InfoFormat("{0} is a directory", filename);
+                    foreach (string dirfile in Directory.EnumerateFiles(filename))
+                    {
+                        AddFile(files, dirfile);
+                    }
+                }
+                else
+                {
+                    AddFile(files, filename);
+                }
+            }
+            return files;
+        }
+
+        private void AddFile(HashSet<FileInfo> files, string filename)
+        {
+            if (File.Exists(filename))
+            {
+                log.InfoFormat("Attempting import of {0}", filename);
+                files.Add(new FileInfo(filename));
+            }
+            else
+            {
+                user.RaiseMessage("File not found: {0}", filename);
+            }
+        }
+
+        private        readonly IUser user;
+        private static readonly ILog  log = LogManager.GetLogger(typeof(Import));
+    }
+
+}
diff --git a/Cmdline/CKAN-cmdline.csproj b/Cmdline/CKAN-cmdline.csproj
index 409b389768..2ca70b235e 100644
--- a/Cmdline/CKAN-cmdline.csproj
+++ b/Cmdline/CKAN-cmdline.csproj
@@ -57,6 +57,7 @@
     <Compile Include="Action\Compare.cs" />
     <Compile Include="Action\CompatSubCommand.cs" />
     <Compile Include="Action\ICommand.cs" />
+    <Compile Include="Action\Import.cs" />
     <Compile Include="Action\Install.cs" />
     <Compile Include="Action\ISubCommand.cs" />
     <Compile Include="Action\KSP.cs" />
diff --git a/Cmdline/Main.cs b/Cmdline/Main.cs
index f2e19adde9..a35b916f92 100644
--- a/Cmdline/Main.cs
+++ b/Cmdline/Main.cs
@@ -189,6 +189,9 @@ private static int RunSimpleAction(Options cmdline, CommonOptions options, strin
                         Scan(GetGameInstance(manager), user, cmdline.action);
                         return (new Upgrade(user)).RunCommand(GetGameInstance(manager), cmdline.options);
 
+                    case "import":
+                        return (new Import(user)).RunCommand(GetGameInstance(manager), options);
+
                     case "clean":
                         return Clean(GetGameInstance(manager));
 
diff --git a/Cmdline/Options.cs b/Cmdline/Options.cs
index e721506cb8..064553b015 100644
--- a/Cmdline/Options.cs
+++ b/Cmdline/Options.cs
@@ -67,6 +67,9 @@ internal class Actions : VerbCommandOptions
         [VerbOption("remove", HelpText = "Remove an installed mod")]
         public RemoveOptions Remove { get; set; }
 
+        [VerbOption("import", HelpText = "Import manually downloaded mods")]
+        public ImportOptions Import { get; set; }
+
         [VerbOption("scan", HelpText = "Scan for manually installed KSP mods")]
         public ScanOptions Scan { get; set; }
 
@@ -132,6 +135,9 @@ public string GetUsage(string verb)
                     case "compare":
                         ht.AddPreOptionsLine($"Usage: ckan {verb} [options] version1 version2");
                         break;
+                    case "import":
+                        ht.AddPreOptionsLine($"Usage: ckan {verb} [options] paths");
+                        break;
 
                     // Now the commands with only --flag type options
                     case "gui":
@@ -433,6 +439,12 @@ internal class RemoveOptions : InstanceSpecificOptions
         public bool rmall { get; set; }
     }
 
+    internal class ImportOptions : InstanceSpecificOptions
+    {
+        [ValueList(typeof(List<string>))]
+        public List<string> paths { get; set; }
+    }
+
     internal class ShowOptions : InstanceSpecificOptions
     {
         [ValueOption(0)] public string Modname { get; set; }
diff --git a/Core/ModuleInstaller.cs b/Core/ModuleInstaller.cs
index b616cafff9..4f3ed0d43c 100644
--- a/Core/ModuleInstaller.cs
+++ b/Core/ModuleInstaller.cs
@@ -1092,7 +1092,8 @@ private void DownloadModules(IEnumerable<CkanModule> mods, IDownloader downloade
         /// <param name="files">Set of files to import</param>
         /// <param name="user">Object for user interaction</param>
         /// <param name="installMod">Function to call to mark a mod for installation</param>
-        public void ImportFiles(HashSet<FileInfo> files, IUser user, Action<string> installMod)
+        /// <param name="allowDelete">True to ask user whether to delete imported files, false to leave the files as is</param>
+        public void ImportFiles(HashSet<FileInfo> files, IUser user, Action<string> installMod, bool allowDelete = true)
         {
             Registry         registry    = registry_manager.registry;
             HashSet<string>  installable = new HashSet<string>();
@@ -1134,7 +1135,7 @@ public void ImportFiles(HashSet<FileInfo> files, IUser user, Action<string> inst
                 }
                 ++i;
             }
-            if (installable.Count > 0 && user.RaiseYesNoDialog($"Install {installable.Count} compatible imported mods?"))
+            if (installable.Count > 0 && user.RaiseYesNoDialog($"Install {installable.Count} compatible imported mods in game instance {ksp.Name} ({ksp.GameDir()})?"))
             {
                 // Install the imported mods
                 foreach (string identifier in installable)
@@ -1142,7 +1143,7 @@ public void ImportFiles(HashSet<FileInfo> files, IUser user, Action<string> inst
                     installMod(identifier);
                 }
             }
-            if (user.RaiseYesNoDialog($"Import complete. Delete {deletable.Count} old files?"))
+            if (allowDelete && deletable.Count > 0 && user.RaiseYesNoDialog($"Import complete. Delete {deletable.Count} old files?"))
             {
                 // Delete old files
                 foreach (FileInfo f in deletable)
diff --git a/Core/Net/NetModuleCache.cs b/Core/Net/NetModuleCache.cs
index 7b298f1300..12c3cc3752 100644
--- a/Core/Net/NetModuleCache.cs
+++ b/Core/Net/NetModuleCache.cs
@@ -142,7 +142,7 @@ public string Store(CkanModule module, string path, string description = null, b
             }
 
             // If no exceptions, then everything is fine
-            return cache.Store(module.download, path, description, move);
+            return cache.Store(module.download, path, description ?? module.StandardName(), move);
         }
 
         private NetFileCache cache;