Major General Tin Sein (Burmese: တင်စိန်, 22 February 1927 – 15 August 2020) was a Burmese military official and major general in the Myanmar Army.

He has served as Deputy Minister of Defence of Myanmar under Ne Win's cabinet.

[1][2] In 1979, he was promoted to major general in the Myanmar Army and served as a military regional command.

He took on the role of the first minister in the Ministry of Livestock and Fisheries, which was the first to be established in Myanmar's civil sector.

[2] Tin Sein's son, Nay Soe Maung married Kyi Kyi Shwe, the daughter of Than Shwe, Myanmar's dictator and formerly head of a military junta.