diff --git a/src/System/Collection/Collection.php b/src/System/Collection/Collection.php
index fb15e255..2b269755 100644
--- a/src/System/Collection/Collection.php
+++ b/src/System/Collection/Collection.php
@@ -507,4 +507,68 @@ public function complementAssoc($collection)
             array_diff_assoc($collection, $this->collection)
         );
     }
+
+    /**
+     * Filter where using operator.
+     *
+     * @param TKey   $key
+     * @param TValue $value
+     *
+     * @return $this
+     */
+    public function where($key, string $operator, $value): self
+    {
+        if ('=' === $operator || '==' === $operator) {
+            return $this->filter(fn ($TValue) => array_key_exists($key, $TValue) && $TValue[$key] == $value);
+        }
+        if ('===' === $operator) {
+            return $this->filter(fn ($TValue) => array_key_exists($key, $TValue) && $TValue[$key] === $value);
+        }
+        if ('!=' === $operator) {
+            return $this->filter(fn ($TValue) => array_key_exists($key, $TValue) && $TValue[$key] != $value);
+        }
+        if ('!==' === $operator) {
+            return $this->filter(fn ($TValue) => array_key_exists($key, $TValue) && $TValue[$key] !== $value);
+        }
+        if ('>' === $operator) {
+            return $this->filter(fn ($TValue) => array_key_exists($key, $TValue) && $TValue[$key] > $value);
+        }
+        if ('>=' === $operator) {
+            return $this->filter(fn ($TValue) => array_key_exists($key, $TValue) && $TValue[$key] >= $value);
+        }
+        if ('<' === $operator) {
+            return $this->filter(fn ($TValue) => array_key_exists($key, $TValue) && $TValue[$key] < $value);
+        }
+        if ('<=' === $operator) {
+            return $this->filter(fn ($TValue) => array_key_exists($key, $TValue) && $TValue[$key] <= $value);
+        }
+
+        return $this->replace([]);
+    }
+
+    /**
+     * Filter where in range.
+     *
+     * @param TKey     $key
+     * @param TValue[] $range
+     *
+     * @return $this
+     */
+    public function whereIn($key, $range): self
+    {
+        return $this->filter(fn ($TValue) => array_key_exists($key, $TValue) && in_array($TValue[$key], $range));
+    }
+
+    /**
+     * Filter where not in range.
+     *
+     * @param TKey     $key
+     * @param TValue[] $range
+     *
+     * @return $this
+     */
+    public function whereNotIn($key, $range): self
+    {
+        return $this->filter(fn ($TValue) => array_key_exists($key, $TValue) && false === in_array($TValue[$key], $range));
+    }
 }
diff --git a/tests/Collection/CollectionTest.php b/tests/Collection/CollectionTest.php
index ed186c4d..a78123de 100644
--- a/tests/Collection/CollectionTest.php
+++ b/tests/Collection/CollectionTest.php
@@ -542,4 +542,111 @@ public function itCanGetComplementUsingAssoc()
             'used'    => 100,
         ], $coll->toArray());
     }
+
+    /**
+     * @test
+     */
+    public function itCanGetFilteredUsingWhere()
+    {
+        $data = [
+            ['user' => 'user1', 'age' => 10],
+            ['user' => 'user2', 'age' => 12],
+            ['user' => 'user3', 'age' => 10],
+            ['user' => 'user4', 'age' => 13],
+            ['user' => 'user5', 'age' => 14],
+        ];
+        $equal = (new Collection($data))->where('age', '=', '13');
+        $this->assertEquals([
+            3 => ['user' => 'user4', 'age' => 13],
+        ], $equal->toArray());
+
+        $identical = (new Collection($data))->where('age', '===', 13);
+        $this->assertEquals([
+            3 => ['user' => 'user4', 'age' => 13],
+        ], $identical->toArray());
+
+        $notequal = (new Collection($data))->where('age', '!=', '13');
+        $this->assertEquals([
+            ['user' => 'user1', 'age' => 10],
+            ['user' => 'user2', 'age' => 12],
+            ['user' => 'user3', 'age' => 10],
+            4       => ['user' => 'user5', 'age' => 14],
+        ], $notequal->toArray());
+
+        $notequalidentical = (new Collection($data))->where('age', '!==', 13);
+        $this->assertEquals([
+            ['user' => 'user1', 'age' => 10],
+            ['user' => 'user2', 'age' => 12],
+            ['user' => 'user3', 'age' => 10],
+            4       => ['user' => 'user5', 'age' => 14],
+        ], $notequalidentical->toArray());
+
+        $greathat = (new Collection($data))->where('age', '>', 13);
+        $this->assertEquals([
+            4 => ['user' => 'user5', 'age' => 14],
+        ], $greathat->toArray());
+
+        $greathatequal = (new Collection($data))->where('age', '>=', 13);
+        $this->assertEquals([
+            3 => ['user' => 'user4', 'age' => 13],
+            4 => ['user' => 'user5', 'age' => 14],
+        ], $greathatequal->toArray());
+
+        $lessthat = (new Collection($data))->where('age', '<', 13);
+        $this->assertEquals([
+            ['user' => 'user1', 'age' => 10],
+            ['user' => 'user2', 'age' => 12],
+            ['user' => 'user3', 'age' => 10],
+        ], $lessthat->toArray());
+
+        $lessthatequal = (new Collection($data))->where('age', '<=', 13);
+        $this->assertEquals([
+            ['user' => 'user1', 'age' => 10],
+            ['user' => 'user2', 'age' => 12],
+            ['user' => 'user3', 'age' => 10],
+            ['user' => 'user4', 'age' => 13],
+        ], $lessthatequal->toArray());
+    }
+
+    /**
+     * @test
+     */
+    public function itCanFilterDataUsingWhereIn()
+    {
+        $data = [
+            ['user' => 'user1', 'age' => 10],
+            ['user' => 'user2', 'age' => 12],
+            ['user' => 'user3', 'age' => 10],
+            ['user' => 'user4', 'age' => 13],
+            ['user' => 'user5', 'age' => 14],
+        ];
+
+        $wherein = (new Collection($data))->whereIn('age', [10, 12]);
+        $this->assertEquals([
+            ['user' => 'user1', 'age' => 10],
+            ['user' => 'user2', 'age' => 12],
+            ['user' => 'user3', 'age' => 10],
+        ], $wherein->toArray());
+    }
+
+    /**
+     * @test
+     */
+    public function itCanFilterDataUsingWhereNotIn()
+    {
+        $data = [
+            ['user' => 'user1', 'age' => 10],
+            ['user' => 'user2', 'age' => 12],
+            ['user' => 'user3', 'age' => 10],
+            ['user' => 'user4', 'age' => 13],
+            ['user' => 'user5', 'age' => 14],
+        ];
+
+        $wherein = (new Collection($data))->whereNotIn('age', [13, 14]);
+        $this->assertEquals([
+            ['user' => 'user1', 'age' => 10],
+            ['user' => 'user2', 'age' => 12],
+            ['user' => 'user3', 'age' => 10],
+        ], $wherein->toArray());
+    }
 }