Kitiyakara Voralaksana, 1st Prince of Chanthaburi (Thai: กิติยากรวรลักษณ์; RTGS: Kitiyakonworalak; 8 June 1874 – 27 May 1931) was a Prince of Siam, a member of the Siamese Royal Family (later Thailand). He originated the House of Kitiyakara (ราชสกุลกิติยากร). His descendants use this royal surname. He is the paternal grandfather of Queen Sirikit, consort of King Bhumibol Adulyadej (Rama IX of Thailand). Through Sirikit he is also the maternal great-grandfather of King Maha Vajiralongkorn (Rama X), who has been King of Thailand since 2016.