Konstantin Alexander Wecker (born 1 June 1947) is a German Liedermacher (singer-songwriter) who also works as a composer, author and actor.
Classically educated at the Wilhelmsgymnasium, Wecker got one of his first jobs as a songwriter at Munich's cabaret "Münchner Lach- und Schießgesellschaft" in 1973.
In 2003, Wecker became a public opponent of the Iraq War, joining his leftist Liedermacher colleagues Hannes Wader and Reinhard Mey.
In March 2006, Wecker was forced to cancel a scheduled performance in the small town of Halberstadt, Saxony-Anhalt.
This came after the far-right National Democratic Party (NPD) pressured local authorities and threatened to forcibly disrupt the concert.