Sportverein Werder Bremen von 1899 e. V. (German pronunciation: [ɛs faʊ̯ ˌvɛʁdɐ ˈbʁeːmən] ), commonly known as Werder Bremen, Werder or simply Bremen, is a German professional sports club based in the Free Hanseatic City of Bremen. Founded on 4 February 1899, Werder are best known for their professional association football team, who compete in the Bundesliga, the first tier of the German football league system. Bremen share the record for most seasons played in the Bundesliga with Bayern Munich, and are ranked third in the all-time Bundesliga table, only behind Bayern and Borussia Dortmund.
Werder have been German champions four times, have won the DFB-Pokal six times, the DFL-Ligapokal once, the DFL-Supercup thrice, and the European Cup Winners' Cup once. The team's first major trophy was the 1960–61 DFB-Pokal; they last won the cup in 2008–09. Bremen's first German championship came in 1964–65, and their latest in 2003–04, when they won the double. In European football, Werder won the 1991–92 European Cup Winners' Cup, and were runners-up in the 2008–09 UEFA Cup.
Bremen have played at the Weserstadion since 1909. The club shares a rivalry with fellow northern German club Hamburger SV, known as the Nordderby (English: "North derby"). In April 2022, Werder had over 40,000 members.