TS or Ts may refer to:
A tsunami (from Japanese: 津波, lit. 'harbour wave';
Tsinghua University (abbreviated THU; Chinese: 清华大学; also romanized as Qinghua) is a major research university in Beijing, and a member of the elite C9 League of Chinese universities.
Tsetse ( SEET-see, US: TSEET-see or UK: TSET-see), sometimes spelled tzetze and also known as tik-tik flies, are large biting flies that inhabit much of tropical Africa.
Tsukihime (Japanese: 月姫, lit. "Lunar Princess") is a Japanese adult dōjin visual novel created by Type-Moon, who first released it at the Winter Comiket in December 2000. The game is not available outside of Japan.
Tsonga () or Xitsonga (Tsonga: Xitsonga) is a Bantu language spoken by the Tsonga people. It is mutually intelligible with Tswa and Ronga, and the name "Tsonga" is often used as a cover term for all three, also sometimes referred to as Tswa-Ronga.