Datu Blah T. Sinsuat (Jawi: بلاه تي سينسوات; December 27, 1908 – December 11, 1984) was a Filipino politician.
Sinsuat was born in Dinaig (now Datu Odin Sinsuat), Cotabato (then a district of the former Moro Province) to former senator Datu Sinsuat Balabaran and Bai Pinagtayon.
He graduated from José Rizal College in 1934 with a Bachelor of Science in Commerce. In the same year, he was elected as one of the delegates to the 1934 Constitutional Convention representing Cotabato's lone district.
Sinsuat successfully ran for the House of Representatives in 1949, representing Cotabato's at-large district in the 2nd Congress until 1953. He made an unsuccessful bid to return to the House in 1969, losing to incumbent Liberal representative Salipada Pendatun. Sinsuat contested the election before the Supreme Court, resulting in the 1970 case Sinsuat v. Pendatun.
Sinsuat later joined the ruling Kilusang Bagong Lipunan of President Ferdinand Marcos and ran for the Interim Batasang Pambansa in 1978, placing seventh among 23 candidates contesting eight seats. He was also elected speaker pro tempore of the assembly in November 1981.
The municipality of Datu Blah T. Sinsuat in Maguindanao del Norte was later named in his honor.
Electoral history + Electoral history of Blah T. Sinsuat Year Office Party Votes received Result Total % . Swing 1934 Constitutional Convention Delegate (Cotabato) Nonpartisan 1949 Representative (Cotabato at-large) rowspan="2" Nacionalista 1st 1969 2nd 1978 Assemblyman (Region XII) KBL 269,905 6.58% 7th
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