Josef Seger (born Josef Ferdinand Norbert Segert, last name also Seeger or Seegr) (21 March 1716 – 22 April 1782) was a Czech organist, composer, and educator. After graduating in philosophy from the Charles University in Prague and studying music under Bohuslav Matěj Černohorský, Jan Zach, and others, Seger became organist of two churches in Prague and remained there until his death.
An extremely prolific composer, Seger became one of the most important representatives of the Czech organ school of the 18th century. He was also an influential teacher: his pupils included Jan Antonín Koželuh and Josef Mysliveček,[1] and his figured bass exercises served many generations of teachers.