diff --git a/src/TgBotLib/Objects/ReplyKeyboardMarkup.php b/src/TgBotLib/Objects/ReplyKeyboardMarkup.php
new file mode 100644
index 0000000..a161a82
--- /dev/null
+++ b/src/TgBotLib/Objects/ReplyKeyboardMarkup.php
@@ -0,0 +1,145 @@
+<?php
+
+    namespace TgBotLib\Objects;
+
+    use TgBotLib\Interfaces\ObjectTypeInterface;
+
+    class ReplyKeyboardMarkup implements ObjectTypeInterface
+    {
+        /**
+         * @var KeyboardButton[][]
+         */
+        private $keyboard;
+
+        /**
+         * @var bool
+         */
+        private $is_persistent;
+
+        /**
+         * @var bool
+         */
+        private $resize_keyboard;
+
+        /**
+         * @var bool
+         */
+        private $one_time_keyboard;
+
+        /**
+         * @var string|null
+         */
+        private $input_field_placeholder;
+
+        /**
+         * @var bool
+         */
+        private $selective;
+
+        /**
+         * Array of button rows, each represented by an Array of KeyboardButton objects
+         *
+         * @return KeyboardButton[][]
+         */
+        public function getKeyboard(): array
+        {
+            return $this->keyboard;
+        }
+
+        /**
+         * Optional. Requests clients to always show the keyboard when the regular keyboard is hidden. Defaults to
+         * false, in which case the custom keyboard can be hidden and opened with a keyboard icon.
+         *
+         * @return bool
+         */
+        public function isIsPersistent(): bool
+        {
+            return $this->is_persistent;
+        }
+
+        /**
+         * Optional. Requests clients to resize the keyboard vertically for optimal fit (e.g., make the keyboard smaller
+         * if there are just two rows of buttons). Defaults to false, in which case the custom keyboard is always of the
+         * same height as the app's standard keyboard.
+         *
+         * @return bool
+         */
+        public function isResizeKeyboard(): bool
+        {
+            return $this->resize_keyboard;
+        }
+
+        /**
+         * Optional. Requests clients to hide the keyboard as soon as it's been used. The keyboard will still be
+         * available, but clients will automatically display the usual letter-keyboard in the chat - the user can
+         * press a special button in the input field to see the custom keyboard again. Defaults to false.
+         *
+         * @return bool
+         */
+        public function isOneTimeKeyboard(): bool
+        {
+            return $this->one_time_keyboard;
+        }
+
+        /**
+         * Optional. The placeholder to be shown in the input field when the keyboard is active; 1-64 characters
+         *
+         * @return string|null
+         */
+        public function getInputFieldPlaceholder(): ?string
+        {
+            return $this->input_field_placeholder;
+        }
+
+        /**
+         * Optional. Use this parameter if you want to show the keyboard to specific users only. Targets: 1) users
+         * that are @mentioned in the text of the Message object; 2) if the bot's message is a reply
+         * (has reply_to_message_id), sender of the original message.
+         *
+         * Example: A user requests to change the bot's language, bot replies to the request with a keyboard to select
+         * the new language. Other users in the group don't see the keyboard.
+         *
+         * @return bool
+         */
+        public function isSelective(): bool
+        {
+            return $this->selective;
+        }
+
+        /**
+         * Returns an array representation of the object.
+         *
+         * @return array
+         */
+        public function toArray(): array
+        {
+            return [
+                'keyboard' => $this->keyboard,
+                'is_persistent' => $this->is_persistent,
+                'resize_keyboard' => $this->resize_keyboard,
+                'one_time_keyboard' => $this->one_time_keyboard,
+                'input_field_placeholder' => $this->input_field_placeholder,
+                'selective' => $this->selective,
+            ];
+        }
+
+        /**
+         * Constructs object from array representation.
+         *
+         * @param array $data
+         * @return ObjectTypeInterface
+         */
+        public static function fromArray(array $data): ObjectTypeInterface
+        {
+            $object = new self();
+
+            $object->keyboard = $data['keyboard'];
+            $object->is_persistent = $data['is_persistent'];
+            $object->resize_keyboard = $data['resize_keyboard'];
+            $object->one_time_keyboard = $data['one_time_keyboard'];
+            $object->input_field_placeholder = $data['input_field_placeholder'];
+            $object->selective = $data['selective'];
+
+            return $object;
+        }
+    }
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