|Prince of Siam|
|Father||Chakrabongse Bhuvanadh, Prince of Bisnulok|
|Born||28 March 1908|
|Died||30 December 1963 (age 55)|
Prince Chula Chakrabongse of Siam (Thai: จุลจักรพงษ์; RTGS: Chunla Chakkraphong; 28 March 1908 – 30 December 1963), was a member of the Siamese (Thai) Royal Family, and the House of Chakrabhongse. He was the only child of Prince Chakrabhongse Bhuvanath, The Prince of Bisnulok, and his Ukrainian wife, Ekaterina (Catherine) Desnitskaya (later Mom Catherine Na Phitsanulok). He was a grandson of King Chulalongkorn, Rama V of Siam.
Prince Chula Chakrabongse was born on 28 March 1908 in Parusakawan Palace, Bangkok, with the title Mom Chao (His Serene Highness). Queen Saovabha Bhongsri, his grandmother, gave him the name Bhongsechak (พงษ์จักร). Later his uncle, King Vajiravudh, raised him the higher rank of Phra Chao Worawongse Ther Phra Ong Chao (His Royal Highness Prince) and changed his name to Chula Chakrabhongse. Palace officials affectionately called him Than Phra Ong Noo (ท่านพระองค์หนู) – the Little Prince.
In 1938 he married Elizabeth Hunter, an English woman (known as Lisba). Their daughter, Mom Rajawongse Narisa Chakrabhongse, was born in 1956.  They lived at Tredethy, St Mabyn, in Cornwall in the 1940s and 1950s.
In 1936 Chula's White Mouse team purchased an ERA for Bira, and he quickly became one of the leading exponents of this class of international racing. Bira's partnership with Prince Chula ended in late 1948.
Prince Chula was the author of several books, including a history of the Chakri dynasty, Lords of Life: the paternal monarchy of Bangkok, 1782–1932, a biography entitled Dick Seaman: a racing champion and his own autobiography: Chakrabongse, HRH Chula, Prince of Thailand (1957). The twain Have Met : An Eastern Prince Came West. United Kingdom: G.T. Foulis & Co. OCLC 11760365. Lay summary (26 June 2001).
Prince Chula died of cancer in 1963 at the age of 55.
- Soravij. "Chakrabongse". Retrieved 24 May 2009.
- HRH Prince Chula CHAKRABONGSE
- "New Zealand Cornish Association newsletter". Retrieved 24 May 2009.
- His Highness (Pra Worawongse Ther Pra Ong Chao) Prince Birabongse Bhanutej