diff --git a/changes/149.changes b/changes/149.changes
new file mode 100644
index 0000000..c028f17
--- /dev/null
+++ b/changes/149.changes
@@ -0,0 +1 @@
+Raise `NotFound` exceptions for in-active Organizations.
\ No newline at end of file
diff --git a/ckanext/recombinant/logic.py b/ckanext/recombinant/logic.py
index 644e6ee..40e18b3 100644
--- a/ckanext/recombinant/logic.py
+++ b/ckanext/recombinant/logic.py
@@ -159,6 +159,9 @@ def _action_find_dataset(context: Context, data_dict: DataDict) -> Tuple[
         raise ValidationError(
             {'owner_org': _("Organization not found")})
 
+    if getattr(owner_org, 'state') != 'active':
+        raise NotFound(_("Organization not found"))
+
     try:
         geno = get_geno(dataset_type)
     except RecombinantException:
diff --git a/ckanext/recombinant/tests/test_logic.py b/ckanext/recombinant/tests/test_logic.py
new file mode 100644
index 0000000..9bf9674
--- /dev/null
+++ b/ckanext/recombinant/tests/test_logic.py
@@ -0,0 +1,39 @@
+import pytest
+
+from ckan.tests.factories import Organization, Sysadmin
+from ckanext.recombinant.tests import RecombinantTestBase
+
+from ckanapi import LocalCKAN
+from ckan.plugins.toolkit import config, ObjectNotFound
+from ckanext.recombinant.tables import _get_plugin
+from ckanext.recombinant.logic import _action_get_dataset
+
+
+class TestRecombinantLogic(RecombinantTestBase):
+    @classmethod
+    def setup_method(self, method):
+        """Method is called at class level before EACH test methods of the class are called.
+        Setup any state specific to the execution of the given class methods.
+        """
+        super(TestRecombinantLogic, self).setup_method(method)
+
+        self.sysadmin = Sysadmin()
+        self.lc = LocalCKAN()
+
+    def test_deleted_org(self):
+        """
+        Deleted orgs should not show Recombinant.
+        """
+        org = Organization()
+        _get_plugin().update_config(config)
+        self.lc.action.recombinant_create(dataset_type='sample',
+                                          owner_org=org['name'])
+        _lc, _geno, dataset = _action_get_dataset({'ignore_auth': True,
+                                                   'user': self.sysadmin['name']},
+                                                  {'dataset_type': 'sample',
+                                                   'owner_org': org['name']})
+        self.lc.action.package_delete(id=dataset['id'])
+        self.lc.action.organization_delete(id=org['id'])
+        with pytest.raises(ObjectNotFound):
+            self.lc.action.recombinant_show(dataset_type='sample',
+                                            owner_org=org['name'])
diff --git a/ckanext/recombinant/views.py b/ckanext/recombinant/views.py
index 2ec90c3..2938132 100644
--- a/ckanext/recombinant/views.py
+++ b/ckanext/recombinant/views.py
@@ -596,7 +596,7 @@ def preview_table(resource_name: str,
         return h.redirect_to('user.login')
 
     org_object = Group.get(owner_org)
-    if not org_object:
+    if not org_object or getattr(org_object, 'state') != 'active':
         return abort(404, _('Organization not found'))
     if org_object.name != owner_org:
         return h.redirect_to(