diff --git a/src/Api/Public/Controllers/CollectionsController.cs b/src/Api/Public/Controllers/CollectionsController.cs
new file mode 100644
index 0000000000..da646f01d2
--- /dev/null
+++ b/src/Api/Public/Controllers/CollectionsController.cs
@@ -0,0 +1,122 @@
+using System;
+using System.Linq;
+using System.Net;
+using System.Threading.Tasks;
+using Bit.Core;
+using Bit.Core.Models.Api.Public;
+using Bit.Core.Repositories;
+using Bit.Core.Services;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+
+namespace Bit.Api.Public.Controllers
+{
+    [Route("public/collections")]
+    [Authorize("Organization")]
+    public class CollectionsController : Controller
+    {
+        private readonly ICollectionRepository _collectionRepository;
+        private readonly ICollectionService _collectionService;
+        private readonly CurrentContext _currentContext;
+
+        public CollectionsController(
+            ICollectionRepository collectionRepository,
+            ICollectionService collectionService,
+            CurrentContext currentContext)
+        {
+            _collectionRepository = collectionRepository;
+            _collectionService = collectionService;
+            _currentContext = currentContext;
+        }
+
+        /// <summary>
+        /// Retrieve a collection.
+        /// </summary>
+        /// <remarks>
+        /// Retrieves the details of an existing collection. You need only supply the unique collection identifier
+        /// that was returned upon collection creation.
+        /// </remarks>
+        /// <param name="id">The identifier of the collection to be retrieved.</param>
+        [HttpGet("{id}")]
+        [ProducesResponseType(typeof(CollectionResponseModel), (int)HttpStatusCode.OK)]
+        [ProducesResponseType((int)HttpStatusCode.NotFound)]
+        public async Task<IActionResult> Get(Guid id)
+        {
+            var collectionWithGroups = await _collectionRepository.GetByIdWithGroupsAsync(id);
+            var collection = collectionWithGroups?.Item1;
+            if(collection == null || collection.OrganizationId != _currentContext.OrganizationId)
+            {
+                return new NotFoundResult();
+            }
+            var response = new CollectionResponseModel(collection, collectionWithGroups.Item2);
+            return new JsonResult(response);
+        }
+
+        /// <summary>
+        /// List all collections.
+        /// </summary>
+        /// <remarks>
+        /// Returns a list of your organization's collections.
+        /// Collection objects listed in this call do not include information about their associated groups.
+        /// </remarks>
+        [HttpGet]
+        [ProducesResponseType(typeof(ListResponseModel<CollectionResponseModel>), (int)HttpStatusCode.OK)]
+        public async Task<IActionResult> List()
+        {
+            var collections = await _collectionRepository.GetManyByOrganizationIdAsync(
+                _currentContext.OrganizationId.Value);
+            // TODO: Get all CollectionGroup associations for the organization and marry them up here for the response.
+            var collectionResponses = collections.Select(c => new CollectionResponseModel(c, null));
+            var response = new ListResponseModel<CollectionResponseModel>(collectionResponses);
+            return new JsonResult(response);
+        }
+
+        /// <summary>
+        /// Update a collection.
+        /// </summary>
+        /// <remarks>
+        /// Updates the specified collection object. If a property is not provided,
+        /// the value of the existing property will be reset.
+        /// </remarks>
+        /// <param name="id">The identifier of the collection to be updated.</param>
+        /// <param name="model">The request model.</param>
+        [HttpPut("{id}")]
+        [ProducesResponseType(typeof(CollectionResponseModel), (int)HttpStatusCode.OK)]
+        [ProducesResponseType(typeof(ErrorResponseModel), (int)HttpStatusCode.BadRequest)]
+        [ProducesResponseType((int)HttpStatusCode.NotFound)]
+        public async Task<IActionResult> Put(Guid id, [FromBody]CollectionCreateUpdateRequestModel model)
+        {
+            var existingCollection = await _collectionRepository.GetByIdAsync(id);
+            if(existingCollection == null || existingCollection.OrganizationId != _currentContext.OrganizationId)
+            {
+                return new NotFoundResult();
+            }
+            var updatedCollection = model.ToCollection(existingCollection);
+            var associations = model.Groups?.Select(c => c.ToSelectionReadOnly());
+            await _collectionService.SaveAsync(updatedCollection, associations);
+            var response = new CollectionResponseModel(updatedCollection, associations);
+            return new JsonResult(response);
+        }
+
+        /// <summary>
+        /// Delete a collection.
+        /// </summary>
+        /// <remarks>
+        /// Permanently deletes a collection. This cannot be undone.
+        /// </remarks>
+        /// <param name="id">The identifier of the collection to be deleted.</param>
+        [HttpDelete("{id}")]
+        [ProducesResponseType((int)HttpStatusCode.OK)]
+        [ProducesResponseType((int)HttpStatusCode.NotFound)]
+        public async Task<IActionResult> Delete(Guid id)
+        {
+            var collection = await _collectionRepository.GetByIdAsync(id);
+            if(collection == null || collection.OrganizationId != _currentContext.OrganizationId)
+            {
+                return new NotFoundResult();
+            }
+            await _collectionRepository.DeleteAsync(collection);
+            return new OkResult();
+        }
+    }
+}
diff --git a/src/Core/Models/Api/Public/Request/CollectionCreateUpdateRequestModel.cs b/src/Core/Models/Api/Public/Request/CollectionCreateUpdateRequestModel.cs
new file mode 100644
index 0000000000..3d877108bf
--- /dev/null
+++ b/src/Core/Models/Api/Public/Request/CollectionCreateUpdateRequestModel.cs
@@ -0,0 +1,21 @@
+using System;
+using System.Collections.Generic;
+using Bit.Core.Models.Table;
+
+namespace Bit.Core.Models.Api.Public
+{
+    public class CollectionCreateUpdateRequestModel : GroupBaseModel
+    {
+        /// <summary>
+        /// The associated groups that this collection is assigned to.
+        /// </summary>
+        public IEnumerable<AssociationWithPermissionsRequestModel> Groups { get; set; }
+
+        public Collection ToCollection(Collection existingCollection)
+        {
+            // TODO
+            // existingCollection.ExternalId = ExternalId;
+            return existingCollection;
+        }
+    }
+}
diff --git a/src/Core/Models/Api/Public/Response/CollectionResponseModel.cs b/src/Core/Models/Api/Public/Response/CollectionResponseModel.cs
new file mode 100644
index 0000000000..25155bc996
--- /dev/null
+++ b/src/Core/Models/Api/Public/Response/CollectionResponseModel.cs
@@ -0,0 +1,44 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using Bit.Core.Models.Data;
+using Bit.Core.Models.Table;
+
+namespace Bit.Core.Models.Api.Public
+{
+    /// <summary>
+    /// A collection.
+    /// </summary>
+    public class CollectionResponseModel : IResponseModel
+    {
+        public CollectionResponseModel(Collection collection, IEnumerable<SelectionReadOnly> groups)
+        {
+            if(collection == null)
+            {
+                throw new ArgumentNullException(nameof(collection));
+            }
+
+            Id = collection.Id;
+            // ExternalId = group.ExternalId; TODO: Add external is for referencing purposes
+            Groups = groups?.Select(c => new AssociationWithPermissionsResponseModel(c));
+        }
+
+        /// <summary>
+        /// String representing the object's type. Objects of the same type share the same properties.
+        /// </summary>
+        /// <example>collection</example>
+        [Required]
+        public string Object => "collection";
+        /// <summary>
+        /// The collection's unique identifier.
+        /// </summary>
+        /// <example>539a36c5-e0d2-4cf9-979e-51ecf5cf6593</example>
+        [Required]
+        public Guid Id { get; set; }
+        /// <summary>
+        /// The associated groups that this collection is assigned to.
+        /// </summary>
+        public IEnumerable<AssociationWithPermissionsResponseModel> Groups { get; set; }
+    }
+}