Hans Adolf Karl Wilhelm Grischkat (29 August 1903 – 10 January 1977) was a German conductor, especially a choral conductor, also a church musician and academic teacher.
He founded the choir Schwäbischer Singkreis for pioneering concerts and recordings of works by Bach and Monteverdi in the spirit of historically informed performance.
He was the church musician of the Christuskirche in Reutlingen, published Bach cantatas for Hänssler, and was from 1950 a professor of choral conducting at the Musikhochschule Stuttgart.