Srivilailaksana, the Princess of Suphanburi (Thai: ศรีวิไลยลักษณ์; rtgs: Siwilailak; 24 July 1868 – 26 October 1904), was the Princess of Siam (later Thailand). She was a member of Siamese Royal Family. She is a daughter of Chulalongkorn, King Rama V of Siam. She was born while her father was the heir-apparent. She was very trusted from her father, that he called her daughter as My greatest-trusted lovely daughter.
She was very trusted by her father of taking care of her step-siblings. And she was allowed from her father for taking care of the young princesses who were going to reach the adult age. Because of the Palace's princesses tradition, when the young princesses nearly reached the adult age, had to be allowed and took care closely by the elders. Furthermore, she was one of the vice-president of the Red Unalom Society (later Thai Red Cross Society) with the other princesses.