diff --git a/api/handler.go b/api/handler.go
index 2275bcd..479bc27 100644
--- a/api/handler.go
+++ b/api/handler.go
@@ -61,6 +61,7 @@ func Handler() *mux.Router {
 
 	m.Get(router.UnitType).Handler(handler(serveUnitType))
 	m.Get(router.CreateUnitType).Handler(handler(serveCreateUnitType))
+	m.Get(router.UnitTypes).Handler(handler(serveUnitTypeList))
 
 	return m
 }
diff --git a/api/unit_types.go b/api/unit_types.go
index 65c2e5e..34d6bb6 100644
--- a/api/unit_types.go
+++ b/api/unit_types.go
@@ -40,3 +40,20 @@ func serveCreateUnitType(w http.ResponseWriter, r *http.Request) error {
 
 	return writeJSON(w, unit_type)
 }
+
+func serveUnitTypeList(w http.ResponseWriter, r *http.Request) error {
+	var opt models.UnitTypeListOptions
+	if err := schemaDecoder.Decode(&opt, r.URL.Query()); err != nil {
+		return err
+	}
+
+	unit_types, err := store.UnitTypes.List(&opt)
+	if err != nil {
+		return err
+	}
+	if unit_types == nil {
+		unit_types = []*models.UnitType{}
+	}
+
+	return writeJSON(w, unit_types)
+}
diff --git a/api/unit_types_test.go b/api/unit_types_test.go
index a762b79..385732f 100644
--- a/api/unit_types_test.go
+++ b/api/unit_types_test.go
@@ -65,3 +65,32 @@ func TestUnitType_Create(t *testing.T) {
 		t.Error("!success")
 	}
 }
+
+func TestUnitType_List(t *testing.T) {
+	setup()
+
+	want := []*models.UnitType{newUnitType()}
+	wantOpt := &models.UnitTypeListOptions{ListOptions: models.ListOptions{Page: 1, PerPage: 10}}
+
+	calledList := false
+	store.UnitTypes.(*models.MockUnitTypesService).List_ = func(opt *models.UnitTypeListOptions) ([]*models.UnitType, error) {
+		if !normalizeDeepEqual(wantOpt, opt) {
+			t.Errorf("wanted options %d but got %d", wantOpt, opt)
+		}
+		calledList = true
+		return want, nil
+	}
+
+	unit_types, err := apiClient.UnitTypes.List(wantOpt)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if !calledList {
+		t.Error("!calledList")
+	}
+
+	if !normalizeDeepEqual(&want, &unit_types) {
+		t.Errorf("got unit_types %+v but wanted unit_types %+v", unit_types, want)
+	}
+}
diff --git a/datastore/unit_types.go b/datastore/unit_types.go
index a6c1ada..621ba60 100644
--- a/datastore/unit_types.go
+++ b/datastore/unit_types.go
@@ -34,3 +34,15 @@ func (s *unitTypesStore) Create(unit_type *models.UnitType) (bool, error) {
 	}
 	return true, nil
 }
+
+func (s *unitTypesStore) List(opt *models.UnitTypeListOptions) ([]*models.UnitType, error) {
+	if opt == nil {
+		opt = &models.UnitTypeListOptions{}
+	}
+	var unit_types []*models.UnitType
+	err := s.dbh.Select(&unit_types, `SELECT * FROM unit_types LIMIT $1 OFFSET $2;`, opt.PerPageOrDefault(), opt.Offset())
+	if err != nil {
+		return nil, err
+	}
+	return unit_types, nil
+}
diff --git a/datastore/unit_types_test.go b/datastore/unit_types_test.go
index ea39d4e..7133a17 100644
--- a/datastore/unit_types_test.go
+++ b/datastore/unit_types_test.go
@@ -62,3 +62,26 @@ func TestUnitTypesStore_Create_db(t *testing.T) {
 		t.Error("want nonzero unit_type.Id after submitting")
 	}
 }
+
+func TestUnitTypesStore_List_db(t *testing.T) {
+	tx, _ := DB.Begin()
+	defer tx.Rollback()
+
+	want_unit_type := insertUnitType(t, tx)
+	want := []*models.UnitType{want_unit_type}
+
+	d := NewDatastore(tx)
+
+	unit_types, err := d.UnitTypes.List(&models.UnitTypeListOptions{ListOptions: models.ListOptions{Page: 1, PerPage: 10}})
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	for i := range want {
+		normalizeTime(&want[i].CreatedAt, &want[i].UpdatedAt, &want[i].DeletedAt)
+		normalizeTime(&unit_types[i].CreatedAt, &unit_types[i].UpdatedAt, &unit_types[i].DeletedAt)
+	}
+	if !reflect.DeepEqual(unit_types, want) {
+		t.Errorf("got unit_types %+v, want %+v", unit_types, want)
+	}
+}
diff --git a/models/unit_types.go b/models/unit_types.go
index b587f6e..30ca352 100644
--- a/models/unit_types.go
+++ b/models/unit_types.go
@@ -31,6 +31,9 @@ type UnitTypesService interface {
 	// Get a unit type
 	Get(id int64) (*UnitType, error)
 
+	// List all unit types
+	List(opt *UnitTypeListOptions) ([]*UnitType, error)
+
 	// Create a unit type
 	Create(unit_type *UnitType) (bool, error)
 }
@@ -84,8 +87,33 @@ func (s *unitTypesService) Create(unit_type *UnitType) (bool, error) {
 	return resp.StatusCode == http.StatusCreated, nil
 }
 
+type UnitTypeListOptions struct {
+	ListOptions
+}
+
+func (s *unitTypesService) List(opt *UnitTypeListOptions) ([]*UnitType, error) {
+	url, err := s.client.url(router.UnitTypes, nil, opt)
+	if err != nil {
+		return nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", url.String(), nil)
+	if err != nil {
+		return nil, err
+	}
+
+	var unit_types []*UnitType
+	_, err = s.client.Do(req, &unit_types)
+	if err != nil {
+		return nil, err
+	}
+
+	return unit_types, nil
+}
+
 type MockUnitTypesService struct {
 	Get_    func(id int64) (*UnitType, error)
+	List_   func(opt *UnitTypeListOptions) ([]*UnitType, error)
 	Create_ func(unit_type *UnitType) (bool, error)
 }
 
@@ -104,3 +132,10 @@ func (s *MockUnitTypesService) Create(unit_type *UnitType) (bool, error) {
 	}
 	return s.Create_(unit_type)
 }
+
+func (s *MockUnitTypesService) List(opt *UnitTypeListOptions) ([]*UnitType, error) {
+	if s.List_ == nil {
+		return nil, nil
+	}
+	return s.List_(opt)
+}
diff --git a/models/unit_types_test.go b/models/unit_types_test.go
index af674a7..1bcd154 100644
--- a/models/unit_types_test.go
+++ b/models/unit_types_test.go
@@ -79,3 +79,36 @@ func TestUnitTypeService_Create(t *testing.T) {
 		t.Errorf("UnitTypes.Create returned %+v, want %+v", unit_type, want)
 	}
 }
+
+func TestUnitTypeService_List(t *testing.T) {
+	setup()
+	defer teardown()
+
+	want := []*UnitType{newUnitType()}
+
+	var called bool
+	mux.HandleFunc(urlPath(t, router.UnitTypes, nil), func(w http.ResponseWriter, r *http.Request) {
+		called = true
+		testMethod(t, r, "GET")
+		testFormValues(t, r, values{})
+
+		writeJSON(w, want)
+	})
+
+	unit_types, err := client.UnitTypes.List(nil)
+	if err != nil {
+		t.Errorf("UnitTypes.List returned error: %v", err)
+	}
+
+	if !called {
+		t.Fatal("!called")
+	}
+
+	for _, u := range want {
+		normalizeTime(&u.CreatedAt, &u.UpdatedAt, &u.DeletedAt)
+	}
+
+	if !reflect.DeepEqual(unit_types, want) {
+		t.Errorf("UnitTypes.List return %+v, want %+v", unit_types, want)
+	}
+}
diff --git a/router/api.go b/router/api.go
index 11b8bfd..78a4e41 100644
--- a/router/api.go
+++ b/router/api.go
@@ -53,6 +53,7 @@ func API() *mux.Router {
 	m.Path("/text_measurement_types/{Id:.+}").Methods("DELETE").Name(DeleteTextMeasurementType)
 
 	// UnitTypes
+	m.Path("/unit_types/").Methods("GET").Name(UnitTypes)
 	m.Path("/unit_types/").Methods("POST").Name(CreateUnitType)
 	m.Path("/unit_types/{Id:.+}").Methods("GET").Name(UnitType)
 
diff --git a/router/routes.go b/router/routes.go
index ffb436d..031d42c 100644
--- a/router/routes.go
+++ b/router/routes.go
@@ -43,4 +43,5 @@ const (
 
 	UnitType       = "unit_type:get"
 	CreateUnitType = "unit_type:create"
+	UnitTypes      = "unit_type:list"
 )