diff --git a/src/Illuminate/Support/Str.php b/src/Illuminate/Support/Str.php
index 6c377897dcf..6f10c3de9bf 100644
--- a/src/Illuminate/Support/Str.php
+++ b/src/Illuminate/Support/Str.php
@@ -207,6 +207,18 @@ public static function containsAll($haystack, array $needles)
         return true;
     }
 
+    /**
+     * Determine if a given string does not contain a given substring.
+     *
+     * @param  string  $haystack
+     * @param  string|string[]  $needles
+     * @return bool
+     */
+    public static function doesntContain($haystack, $needles)
+    {
+        return ! static::contains(...func_get_args());
+    }
+
     /**
      * Determine if a given string ends with a given substring.
      *
diff --git a/src/Illuminate/Support/Stringable.php b/src/Illuminate/Support/Stringable.php
index de073f48bd0..1d8fcf53b0e 100644
--- a/src/Illuminate/Support/Stringable.php
+++ b/src/Illuminate/Support/Stringable.php
@@ -173,6 +173,18 @@ public function dirname($levels = 1)
         return new static(dirname($this->value, $levels));
     }
 
+    /**
+     * Determine if a given string does not contain a given substring.
+     *
+     * @param  string  $haystack
+     * @param  string|string[]  $needles
+     * @return bool
+     */
+    public function doesntContain($needles)
+    {
+        return Str::doesntContain($this->value, $needles);
+    }
+
     /**
      * Determine if a given string ends with a given substring.
      *
diff --git a/tests/Support/SupportStrTest.php b/tests/Support/SupportStrTest.php
index de2e60349d0..8418e51a171 100755
--- a/tests/Support/SupportStrTest.php
+++ b/tests/Support/SupportStrTest.php
@@ -215,6 +215,19 @@ public function testStrContains()
         $this->assertFalse(Str::contains('', ''));
     }
 
+    public function testStrDoesntContain()
+    {
+        $this->assertTrue(Str::doesntContain('', ''));
+        $this->assertTrue(Str::doesntContain('taylor', 'xxx'));
+        $this->assertTrue(Str::doesntContain('taylor', ['xxx']));
+        $this->assertTrue(Str::doesntContain('taylor', ['foo', 'bar']));
+        $this->assertTrue(Str::doesntContain('taylor', ''));
+        $this->assertFalse(Str::doesntContain('taylor', 'ylo'));
+        $this->assertFalse(Str::doesntContain('taylor', 'taylor'));
+        $this->assertFalse(Str::doesntContain('taylor', ['ylo']));
+        $this->assertFalse(Str::doesntContain('taylor', ['xxx', 'ylo']));
+    }
+
     public function testStrContainsAll()
     {
         $this->assertTrue(Str::containsAll('taylor otwell', ['taylor', 'otwell']));
diff --git a/tests/Support/SupportStringableTest.php b/tests/Support/SupportStringableTest.php
index f3afdef9b18..89a4d6b4e72 100644
--- a/tests/Support/SupportStringableTest.php
+++ b/tests/Support/SupportStringableTest.php
@@ -551,6 +551,19 @@ public function testContains()
         $this->assertFalse($this->stringable('taylor')->contains(''));
     }
 
+    public function testStrDoesntContain()
+    {
+        $this->assertTrue($this->stringable('')->doesntContain(''));
+        $this->assertTrue($this->stringable('taylor')->doesntContain('xxx'));
+        $this->assertTrue($this->stringable('taylor')->doesntContain(['xxx']));
+        $this->assertTrue($this->stringable('taylor')->doesntContain(['foo', 'bar']));
+        $this->assertTrue($this->stringable('taylor')->doesntContain(''));
+        $this->assertFalse($this->stringable('taylor')->doesntContain('ylo'));
+        $this->assertFalse($this->stringable('taylor')->doesntContain('taylor'));
+        $this->assertFalse($this->stringable('taylor')->doesntContain(['ylo']));
+        $this->assertFalse($this->stringable('taylor')->doesntContain(['xxx', 'ylo']));
+    }
+
     public function testContainsAll()
     {
         $this->assertTrue($this->stringable('taylor otwell')->containsAll(['taylor', 'otwell']));