Jan Zavřel (5 May 1879 – 3 June 1946) was a Czech zoologist and entomologist.

He served as a dean and rector of Masaryk University in Brno.

He was a specialist on the Chironomidae and the insect genera Zavrelia and Zavreliella are name after him.

He then became a school teacher working in Hodonín and Hradec Králové.

He joined Masaryk University in 1920 and was founder of the institute of zoology.