diff --git a/lib/OpenQA/Schema/ResultSet/Jobs.pm b/lib/OpenQA/Schema/ResultSet/Jobs.pm
index 26cf07c92ac6..53e22d5a9648 100644
--- a/lib/OpenQA/Schema/ResultSet/Jobs.pm
+++ b/lib/OpenQA/Schema/ResultSet/Jobs.pm
@@ -274,6 +274,15 @@ sub _prepare_complex_query_search_args ($self, $args) {
         push @conds, {'me.group_id' => {-in => $subquery}};
     }
 
+    if (defined $args->{not_groupid}) {
+        my $id = $args->{not_groupid};
+        if ($id) {
+            push @conds, {-or => [{'me.group_id' => {-not_in => $id}}, {'me.group_id' => undef},]};
+        }
+        else {
+            push @conds, {'me.group_id' => {-not => undef}};
+        }
+    }
     if ($args->{ids}) {
         push @conds, {'me.id' => {-in => $args->{ids}}};
     }
diff --git a/lib/OpenQA/WebAPI/Controller/API/V1/Job.pm b/lib/OpenQA/WebAPI/Controller/API/V1/Job.pm
index 6f7dffe73e82..8b82eec35648 100644
--- a/lib/OpenQA/WebAPI/Controller/API/V1/Job.pm
+++ b/lib/OpenQA/WebAPI/Controller/API/V1/Job.pm
@@ -85,6 +85,7 @@ sub list ($self) {
     $validation->optional('limit')->num;
     $validation->optional('offset')->num;
     $validation->optional('groupid')->num;
+    $validation->optional('not_groupid')->num;
 
     my $limits = OpenQA::App->singleton->config->{misc_limits};
     my $limit = min($limits->{generic_max_limit}, $validation->param('limit') // $limits->{generic_default_limit});
@@ -99,7 +100,7 @@ sub list ($self) {
     $args{limit} = $limit + 1;
     $args{offset} = $offset;
     my @args = qw(build iso distri version flavor scope group groupid
-      before after arch hdd_1 test machine worker_class
+      not_groupid before after arch hdd_1 test machine worker_class
       modules modules_result);
     for my $arg (@args) {
         next unless defined(my $value = $self->param($arg));
diff --git a/t/api/04-jobs.t b/t/api/04-jobs.t
index 347e63ca980b..44bc010153ec 100644
--- a/t/api/04-jobs.t
+++ b/t/api/04-jobs.t
@@ -123,6 +123,21 @@ subtest 'check job group' => sub {
     is(scalar(@{$t->tx->res->json->{jobs}}), 0);
 };
 
+subtest 'exclude groupless jobs' => sub {
+    my %jobs = map { $_->{id} => $_ } @jobs;
+    is($jobs{99928}->{state}, 'scheduled', 'groupless job is listed');
+    $t->get_ok('/api/v1/jobs?not_groupid=0')->status_is(200);
+    @jobs = @{$t->tx->res->json->{jobs}};
+    is scalar @jobs, 15, 'groupless jobs are excluded';
+};
+
+subtest 'exclude specific group' => sub {
+    my %jobs = map { $_->{id} => $_ } @jobs;
+    $t->get_ok('/api/v1/jobs?not_groupid=1001')->status_is(200);
+    @jobs = @{$t->tx->res->json->{jobs}};
+    is scalar @jobs, 4, 'jobs of specified groups are excluded';
+};
+
 subtest 'restricted query' => sub {
     $t->get_ok('/api/v1/jobs?iso=openSUSE-13.1-DVD-i586-Build0091-Media.iso');
     is(scalar(@{$t->tx->res->json->{jobs}}), 6, 'query for existing jobs by iso');