diff --git a/src/Illuminate/Validation/Concerns/ReplacesAttributes.php b/src/Illuminate/Validation/Concerns/ReplacesAttributes.php
index f5c3eb00c4e0..414354c7c04f 100644
--- a/src/Illuminate/Validation/Concerns/ReplacesAttributes.php
+++ b/src/Illuminate/Validation/Concerns/ReplacesAttributes.php
@@ -505,4 +505,32 @@ protected function replaceStartsWith($message, $attribute, $rule, $parameters)
 
         return str_replace(':values', implode(', ', $parameters), $message);
     }
+
+    /**
+     * Replace all place-holders for the unfilled_if rule.
+     *
+     * @param  string  $message
+     * @param  string  $attribute
+     * @param  string  $rule
+     * @param  array  $parameters
+     * @return string
+     */
+    protected function replaceUnfilledIf($message, $attribute, $rule, $parameters)
+    {
+        return $this->replaceRequiredIf($message, $attribute, $rule, $parameters);
+    }
+
+    /**
+     * Replace all place-holders for the unfilled_with rule.
+     *
+     * @param  string  $message
+     * @param  string  $attribute
+     * @param  string  $rule
+     * @param  array  $parameters
+     * @return string
+     */
+    protected function replaceUnfilledWith($message, $attribute, $rule, $parameters)
+    {
+        return $this->replaceRequiredWith($message, $attribute, $rule, $parameters);
+    }
 }
diff --git a/src/Illuminate/Validation/Concerns/ValidatesAttributes.php b/src/Illuminate/Validation/Concerns/ValidatesAttributes.php
index fe394a2b0638..132a245bf572 100644
--- a/src/Illuminate/Validation/Concerns/ValidatesAttributes.php
+++ b/src/Illuminate/Validation/Concerns/ValidatesAttributes.php
@@ -1726,6 +1726,46 @@ public function validateTimezone($attribute, $value)
         return in_array($value, timezone_identifiers_list(), true);
     }
 
+    /**
+     * Validate that an attribute is unfilled when another attribute has a given value.
+     *
+     * @param  string  $attribute
+     * @param  mixed  $value
+     * @param  mixed  $parameters
+     * @return bool
+     */
+    public function validateUnfilledIf($attribute, $value, $parameters)
+    {
+        $this->requireParameterCount(1, $parameters, 'unfilled_if');
+
+        [$values, $other] = $this->prepareValuesAndOther($parameters);
+
+        if (in_array($other, $values)) {
+            return ! $this->validateRequired($attribute, $value);
+        }
+
+        return true;
+    }
+
+    /**
+     * Validate that an attribute is unfilled when any other attribute exists.
+     *
+     * @param  string  $attribute
+     * @param  mixed  $value
+     * @param  mixed  $parameters
+     * @return bool
+     */
+    public function validateUnfilledWith($attribute, $value, $parameters)
+    {
+        $this->requireParameterCount(1, $parameters, 'unfilled_with');
+
+        if (! $this->allFailingRequired($parameters)) {
+            return ! $this->validateRequired($attribute, $value);
+        }
+
+        return true;
+    }
+
     /**
      * Validate that an attribute is a valid URL.
      *
diff --git a/src/Illuminate/Validation/Validator.php b/src/Illuminate/Validation/Validator.php
index 86fbfc8769eb..17e7935818d6 100755
--- a/src/Illuminate/Validation/Validator.php
+++ b/src/Illuminate/Validation/Validator.php
@@ -221,6 +221,7 @@ class Validator implements ValidatorContract
         'RequiredWithout',
         'RequiredWithoutAll',
         'Same',
+        'UnfilledIf',
         'Unique',
     ];
 
diff --git a/tests/Validation/ValidationValidatorTest.php b/tests/Validation/ValidationValidatorTest.php
index 826aeef296c3..9f99269f29fa 100755
--- a/tests/Validation/ValidationValidatorTest.php
+++ b/tests/Validation/ValidationValidatorTest.php
@@ -5571,6 +5571,80 @@ public function testValidateFailsWithAsterisksAsDataKeys()
         $this->assertSame(['data.1.date' => ['validation.date'], 'data.*.date' => ['validation.date']], $validator->messages()->toArray());
     }
 
+    public function testValidateUnfilledIf()
+    {
+        $basicUnfilledRules = [
+            'mode' => 'required',
+            'full_name' => 'unfilled_if:mode,split',
+            'first_name' => 'required_if:mode,split',
+            'last_name' => 'required_if:mode,split',
+        ];
+        $v = new Validator($this->getIlluminateArrayTranslator(), ['mode' => 'none'], $basicUnfilledRules);
+        $this->assertTrue($v->passes());
+
+        $v = new Validator($this->getIlluminateArrayTranslator(), [
+            'mode' => 'split',
+            'first_name' => 'Richard',
+            'last_name' => 'Bobby',
+        ], $basicUnfilledRules);
+        $this->assertTrue($v->passes());
+
+        $v = new Validator($this->getIlluminateArrayTranslator(), [
+            'mode' => 'split',
+            'full_name' => 'Ricky Bobby',
+            'first_name' => 'Richard',
+            'last_name' => 'Bobby',
+        ], $basicUnfilledRules);
+        $this->assertTrue($v->fails());
+
+        $v = new Validator($this->getIlluminateArrayTranslator(), [
+            'mode' => 'split',
+            'full_name' => 'Ricky Bobby',
+            'last_name' => 'Bobby',
+        ], $basicUnfilledRules);
+        $this->assertTrue($v->fails());
+
+        $basicUnfilledRules = [
+            'mode' => 'required',
+            'full_name' => 'required_if:mode,single',
+            'first_name' => 'unfilled_if:mode,single',
+            'last_name' => 'unfilled_if:mode,single',
+        ];
+        $v = new Validator($this->getIlluminateArrayTranslator(), [
+            'mode' => 'single',
+            'full_name' => 'Ricky Bobby',
+        ], $basicUnfilledRules);
+        $this->assertTrue($v->passes());
+
+        $v = new Validator($this->getIlluminateArrayTranslator(), [
+            'mode' => 'single',
+            'full_name' => 'Ricky Bobby',
+            'last_name' => 'Bobby',
+        ], $basicUnfilledRules);
+        $this->assertTrue($v->fails());
+    }
+
+    public function testValidateUnfilledWith()
+    {
+        $v = new Validator($this->getIlluminateArrayTranslator(), [], ['name' => 'unfilled_with:first_name', 'first_name' => 'sometimes']);
+        $this->assertTrue($v->passes());
+
+        $v = new Validator($this->getIlluminateArrayTranslator(), ['name' => 'Ricky Bobby'], ['name' => 'unfilled_with:first_name,last_name', 'first_name' => 'sometimes']);
+        $this->assertTrue($v->passes());
+
+        $v = new Validator($this->getIlluminateArrayTranslator(), ['name' => 'Ricky Bobby', 'first_name' => 'Richard', 'last_name' => 'Robertson'], ['name' => 'unfilled_with:first_name,last_name', 'first_name' => 'sometimes', 'last_name' => 'sometimes']);
+        $this->assertTrue($v->fails());
+
+        $v = new Validator($this->getIlluminateArrayTranslator(), ['name' => 'Ricky Bobby', 'last_name' => 'Robertson'], ['name' => 'unfilled_with:first_name,last_name', 'first_name' => 'sometimes']);
+        $this->assertTrue($v->fails());
+
+        $v = new Validator($this->getIlluminateArrayTranslator(), ['name' => 'Ricky Bobby', 'first_name' => 'Richard', 'last_name' => 'Robert'], ['name' => 'sometimes', 'first_name' => 'unfilled_with:name', 'last_name' => 'unfilled_with:name']);
+        $this->assertTrue($v->fails());
+
+        $v = new Validator($this->getIlluminateArrayTranslator(), ['first_name' => 'Richard', 'last_name' => 'Robert'], ['name' => 'sometimes', 'first_name' => 'unfilled_with:name', 'last_name' => 'unfilled_with:name']);
+        $this->assertTrue($v->passes());
+    }
+
     protected function getTranslator()
     {
         return m::mock(TranslatorContract::class);