diff --git src/bp-groups/bp-groups-classes.php src/bp-groups/bp-groups-classes.php
index 7121ea4..e53f30c 100644
--- src/bp-groups/bp-groups-classes.php
+++ src/bp-groups/bp-groups-classes.php
@@ -765,7 +765,7 @@ class BP_Groups_Group {
 			$sql[] = "ORDER BY {$orderby} {$order}";
 		}
 
-		if ( ! empty( $r['per_page'] ) && ! empty( $r['page'] ) ) {
+		if ( ! empty( $r['per_page'] ) && ! empty( $r['page'] ) && $r['per_page'] != -1 ) {
 			$sql['pagination'] = $wpdb->prepare( "LIMIT %d, %d", intval( ( $r['page'] - 1 ) * $r['per_page']), intval( $r['per_page'] ) );
 		}
 
diff --git tests/phpunit/testcases/groups/class-bp-groups-group.php tests/phpunit/testcases/groups/class-bp-groups-group.php
index 3cc7237..1a3476b 100644
--- tests/phpunit/testcases/groups/class-bp-groups-group.php
+++ tests/phpunit/testcases/groups/class-bp-groups-group.php
@@ -338,6 +338,50 @@ class BP_Tests_BP_Groups_Group_TestCases extends BP_UnitTestCase {
 		$this->assertEquals( '1', $groups['total'] );
 	}
 
+	/**
+	 * @group get
+	 * @ticket BP5477
+	 */
+	public function test_get_groups_page_perpage_params() {
+		// Create more than 20 groups (20 is the default per_page number)
+		$group_ids = array();
+
+		for ( $i = 1; $i <= 25; $i++ ) {
+		    $group_ids[] = $this->factory->group->create();
+		}
+
+		// Tests
+		// Passing false to 'per_page' and 'page' should result in pagination not being applied
+		$groups = BP_Groups_Group::get( array(
+			'per_page' 	=> 	false,
+			'page'		=> 	false
+		) );
+
+		// Should return all groups; "paged" group total should be 25
+		$this->assertEquals( count( $group_ids ), count( $groups['groups'] ) );
+
+		unset( $groups );
+
+		// Passing 'per_page' => -1 should result in pagination not being applied.
+		$groups = BP_Groups_Group::get( array(
+			'per_page' 	=> 	-1
+		) );
+
+		// Should return all groups; "paged" group total should match 25
+		$this->assertEquals( count( $group_ids ), count( $groups['groups'] ) );
+
+		unset( $groups );
+
+		// If "per_page" and "page" are both set, should result in pagination being applied.
+		$groups = BP_Groups_Group::get( array(
+			'per_page' 	=> 	12,
+			'page'		=>	1
+		) );
+
+		// Should return top 12 groups only
+		$this->assertEquals( '12', count( $groups['groups'] ) );
+	}
+
 	/** convert_type_to_order_orderby() **********************************/
 
 	/**