Johann Baptist Schenk (30 November 1753 – 29 December 1836) was an Austrian composer and teacher.
While still a boy he composed songs, dances and symphonies, and became a proficient violinist and keyboard and wind instrument player.
Beginning in 1777 he was composing religious works for Saint Stephen's Cathedral.
In the 1780s he became a prolific composer of incidental music for plays and singspiele.
Mozart was a good friend of Schenk and Beethoven studied under him in 1793.