Yaovamalaya Narumala, Princess of Sawankhalok (Thai: เยาวมาลย์นฤมล; RTGS: Yaowamannaruemon; 4 June 1873–3 July 1909), was a Princess of Siam (later Thailand).

Her mother was Ubolratana Narinaga, the Princess Akaravorarajgalya, daughter of Ladavalya, the Prince Bhumindrabhakdi and Mom Chin Ladavalya na Ayudhya.

She was given full name by her father as Yaovamalaya Narumala Sabasakon Galyani (Thai: เยาวมาลย์นฤมล สรรพสกนธ์กัลยาณี) She served as an executive vice-president of the Red Unalom Society, a humanitarian organisation (later the Thai Red Cross Society), founded by Queen Savang Vadhana as maternal patron.

Queen Saovabha Phongsri was appointed its first president, and Plien Phasakoravongs acted as the society secretary.

Princess Yaovamalaya Narumala died on 3 July 1909, at the age of 36.