Princess Manyabhadhorn ( ; ; 22 September 1854 – 26 October 1885) was a Princess of Siam (now Thailand). She was a member of Siamese royal family is a daughter of King Mongkut and Chao Chom Manda Chan and half-sister of King Chulalongkorn.

Her mother was Chao Chom Manda Chan Suksathit. She was the daughter of Suk Suksathit. She was a given full name by her father as Phra Chao Borom Wong Ther Phra Ong Chao Manyabhadhorn ().

Princess Manyabhadhorn died 26 October 1885 at the age of 30.

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