diff --git a/app/controllers/concerns/facetable.rb b/app/controllers/concerns/facetable.rb
index 28434ff8c..3967fd564 100644
--- a/app/controllers/concerns/facetable.rb
+++ b/app/controllers/concerns/facetable.rb
@@ -77,7 +77,8 @@ module Facetable
   CLIENT_TYPES = {
     "repository" => "Repository",
     "periodical" => "Periodical",
-    "igsnCatalog" => "IGSN ID Catalog"
+    "igsnCatalog" => "IGSN ID Catalog",
+    "raidRegistry" => "RAiD Registry",
   }.freeze
 
   OTHER = { "__other__" => "Other", "__missing__" => "Missing" }.freeze
diff --git a/app/models/client.rb b/app/models/client.rb
index 6f36bbf93..7ba2e7ce5 100644
--- a/app/models/client.rb
+++ b/app/models/client.rb
@@ -77,7 +77,7 @@ class Client < ApplicationRecord
                          in: %w[ROLE_DATACENTRE],
                          message: "Role %s is not included in the list"
   validates_inclusion_of :client_type,
-                         in: %w[repository periodical igsnCatalog],
+                         in: %w[repository periodical igsnCatalog raidRegistry],
                          message: "Client type %s is not included in the list"
   validates_associated :provider
   validate :check_id, on: :create
diff --git a/openapi.yaml b/openapi.yaml
index eaac3e6d1..abd336d28 100644
--- a/openapi.yaml
+++ b/openapi.yaml
@@ -207,6 +207,7 @@ paths:
               - repository
               - periodical
               - igsnCatalog
+              - raidRegistry
         - in: query
           name: repository-type
           schema:
@@ -350,6 +351,7 @@ paths:
               - repository
               - periodical
               - igsnCatalog
+              - raidRegistry
         - in: query
           name: certificate
           schema:
diff --git a/spec/models/client_spec.rb b/spec/models/client_spec.rb
index a317b4147..7693d580a 100644
--- a/spec/models/client_spec.rb
+++ b/spec/models/client_spec.rb
@@ -340,6 +340,12 @@
       expect(client.errors.details).to be_empty
     end
 
+    it "raidRegistry" do
+      client.client_type = "raidRegistry"
+      expect(client.save).to be true
+      expect(client.errors.details).to be_empty
+    end
+
     it "unsupported" do
       client.client_type = "conference"
       expect(client.save).to be false
diff --git a/spec/requests/clients_spec.rb b/spec/requests/clients_spec.rb
index 9b2329785..31d13ee9e 100644
--- a/spec/requests/clients_spec.rb
+++ b/spec/requests/clients_spec.rb
@@ -126,6 +126,26 @@
         }
       end
 
+      let(:raid_registry_client_id) { provider.symbol + ".RAID" }
+      let(:params_raid_registry) do
+        {
+          "data" => {
+            "type" => "clients",
+            "attributes" => {
+              "symbol" => raid_registry_client_id,
+              "name" => "Imperial College",
+              "contactEmail" => "bob@example.com",
+              "clientType" => "raidRegistry",
+            },
+            "relationships": {
+              "provider": {
+                "data": { "type": "providers", "id": provider.uid },
+              },
+            },
+          },
+        }
+      end
+
       it "creates a client" do
         post "/clients", params, headers
 
@@ -168,6 +188,26 @@
           { "count" => 1, "id" => "igsnCatalog", "title" => "IGSN ID Catalog" },
         )
       end
+
+      it "creates a client with raidRegistry client_type" do
+        post "/clients", params_raid_registry, headers
+
+        expect(last_response.status).to eq(201)
+        attributes = json.dig("data", "attributes")
+        expect(attributes["clientType"]).to eq("raidRegistry")
+
+        Client.import
+        sleep 2
+
+        get "/clients", nil, headers
+
+        expect(json["data"].size).to eq(2)
+        raid_registry_client = json.dig("data").find { |client| client.dig("attributes", "clientType") == "raidRegistry" }
+        expect(raid_registry_client.dig("attributes", "symbol")).to eq(raid_registry_client_id)
+        expect(json.dig("meta", "clientTypes").find { |clientTypeAgg| clientTypeAgg["id"] == "raidRegistry" }).to eq(
+          { "count" => 1, "id" => "raidRegistry", "title" => "RAiD Registry" },
+        )
+      end
     end
 
     context "when the request is invalid" do
diff --git a/spec/requests/datacite_dois_spec.rb b/spec/requests/datacite_dois_spec.rb
index 769b8bb9e..914d1986a 100755
--- a/spec/requests/datacite_dois_spec.rb
+++ b/spec/requests/datacite_dois_spec.rb
@@ -429,7 +429,9 @@
   describe "GET /dois with client-type filter", elasticsearch: true do
     let!(:dois) { create_list(:doi, 10, client: client, aasm_state: "findable", version_info: "testtag") }
     let(:client_igsn_id_catalog) { create(:client, provider: provider, client_type: "igsnCatalog") }
+    let(:client_raid_registry) { create(:client, provider: provider, client_type: "raidRegistry") }
     let!(:doi_igsn_id) { create(:doi, client: client_igsn_id_catalog, aasm_state: "findable", types: { "resourceTypeGeneral": "PhysicalObject" }) }
+    let!(:doi_raid_registry) { create(:doi, client: client_raid_registry, aasm_state: "findable", types: { "resourceTypeGeneral": "Other", "resourceType": "Project" }) }
     let!(:dois_other) { create_list(:doi, 5, client: client_igsn_id_catalog, aasm_state: "findable", types: { "resourceTypeGeneral": "Dataset" }) }
 
     before do
@@ -437,7 +439,7 @@
       sleep 2
     end
 
-    it "filters by client_type when client-type is set", vcr: true do
+    it "filters by repository client_type when client-type is set", vcr: true do
       get "/dois?client-type=repository", nil, headers
 
       expect(last_response.status).to eq(200)
@@ -452,6 +454,14 @@
       expect(json.dig("data", 0, "id")).to eq(doi_igsn_id.uid)
       expect(json.dig("meta", "createdByMonth", 0, "title")).to eq(doi_igsn_id.created.to_time.strftime("%Y-%m"))
     end
+
+    it "filters by raidRegistry client_type when client-type is set", vcr: true do
+      get "/dois?client-type=raidRegistry", nil, headers
+
+      expect(last_response.status).to eq(200)
+      expect(json["data"].size).to eq(1)
+      expect(json.dig("data", 0, "id")).to eq(doi_raid_registry.uid)
+    end
   end
 
   describe "GET /dois with resource-type-id filter", elasticsearch: true do