Trzciński is a Polish surname. Other forms are Trzcinski (outside Poland) or Trzcińska (feminine). Notable people with the surname include:
Danielle Trzcinski, American actor and comedian Edmund Trzcinski (1921–1996), American playwright Henryk Trzciński (born 1954), Polish rower Krzysztof Trzciński, known as Krzysztof Komeda (1931 – 23 April 1969), Polish film score composer and jazz pianist Maria Trzcińska (1931–2011), Polish judge Mariusz Trzciński (born 1954), Polish rower, twin brother of Henryk Wojciech Trzciński (1949–2025), Polish composer and musician
See also Trzcińskie, a village in north-eastern Poland Trzcińsk, a village in northern Poland Kuźnica Trzcińska, a village in west-central Poland