Johann Baptist Wendling (baptised 17 June 1723 – 27 November 1797) was a flute player and composer of the Mannheim School.

He held the position of principal flute in the Mannheim and Munich court orchestras under directors Johann Stamitz and Christian Cannabich, and was acknowledged as one of the finest virtuosos of his time.

He had significant personal and musical contact with Johann Christian Bach and Wolfgang Amadeus Mozart and influenced their conception of the capabilities of the flute.

Ilia's second aria contains a four-part obbligato for flute, oboe, bassoon and horn, composed by Mozart for Wendling and his colleagues.

His works are now being re-issued by major international music publishers, including Schott, Henle, Heinrichshofen, Eulenburg, and Hug.