Prince Kashemsanta Sobhaga, the Prince Phromwaranurak (Thai: พระเจ้าบรมวงศ์เธอ พระองค์เจ้าเกษมสันต์โสภาคย์ กรมหลวงพรหมวรานุรักษ์; RTGS: Phrachao Boromwong Thoe Phra Ong Chao Kasemsan Sophak Krommaluang Phromwaranurak; 18 August 1856 – 4 January 1924) was a Prince of Siam (later Thailand a member of Siamese royal family and a member House of Kashemsanta is a son of King Mongkut of Siam.

Kashemsanta Sobhaga
Prince Phromwaranurak
Born	(1856-08-18)18 August 1856 Bangkok, Siam
Died	4 January 1924(1924-01-04) (aged 67) Bangkok, Siam
Spouse	List of spouses Princess Chaeng Ninlarat Yaem Asuni Sutti Nin Chiam Khotchaseni Malai Pao Asuni Lamai Suriyakun Nuan Thongsuk An Huang Palakawong na Ayutthaya Pluem Nuanchan Itsarasena Phian Ditthachai
Issue	39 sons and 22 daughters
Names Kashemsanta Sobhaga, the Prince Phromwaranurak
House	Chakri Dynasty
Father	Mongkut (Rama IV)
Mother	Phae Thammasarot

His mother was Chao Chom Manda Pae Dharmasaroja is a daughter of Phra Samranharuethai (Uan Dharmasaroja) and Thao Songkandan (Si Dharmasaroja) he had 4 siblings, 2 elder sisters, 1 younger brother and 1 younger sister

1. Princess Yingyaovalaksana Akkararajasuda (later Mom Ying)
2. Princess Bhaktra Bimalabarna
3. Prince Manusyanagamanop
4. Princess Banchob Benchama

Prince Kashemsanta Sobhaga died 4 January 1924 at the age 67.