TS or Ts may refer to:
A tsunami (from Japanese: 津波, "harbour wave"; English pronunciation: tsoo-NAH-mee) or tidal wave, also known as a seismic sea wave, is a series of waves in a water body caused by the displacement of a large volume of water, generally in an ocean or a large lake.
Tsinghua University (abbreviated THU; Chinese: 清华大学), also romanized as Qinghua, is a 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.
Tsushima Island (対馬, Tsushima) is an island of the Japanese archipelago situated in the Korea Strait, approximately halfway between the Japanese mainland and the Korean Peninsula.
Turn- und Sportverein München von 1860, commonly known as TSV 1860 München (German pronunciation: [teː ʔɛs faʊ ˈʔaxtseːnˈhʊndɐt ˈzɛçtsɪç ˈmʏnçn̩]) or 1860 Munich, is a German sports club based in Munich.