Tietjen

Tietjen is a German surname. Notable people with the surname include:


 * Bettina Tietjen (born 1960), German television presenter
 * Friedrich Tietjen (1834–1895), German astronomer
 * Heinz Tietjen (1881–1967), German conductor
 * Henry Roland Tietjen (1891-1976), American Legislator (Utah)
 * James J. Tietjen (1933–2016), American researcher and executive
 * John Tietjen (1928–2004), American Lutheran clergyman, theologian

Other uses

 * 2158 Tietjen, main-belt asteroid
 * Wilhelm-Tietjen-Stiftung für Fertilisation, fertility research group