Jiří Jelínek (6 July 1922 – 16 October 1984) was a Czech painter, illustrator, jazz trumpeter, and popular singer, one of the music legends of the Semafor Theatre in 1960s.

His hoarse singing voice – similar to Louis Armstrong's – earned him the nickname "The Czech Satchmo".

He studied painting and illustration as a pupil of František Tichý, but also showed early promise as a talented and skilful trumpeter.

At first he worked as a professional painter and illustrator, and played in various amateur jazz ensembles, but in 1945 he began a part-time professional career as a trumpeter with the Karel Vlach Orchestra and the Gustav Brom Orchestra and began to use the distinctive, hoarse singing voice which later became one of his most notable characteristics.

Jelínek sang other Semafor hits, including "Zčervená", "Bolí mě hlava" and Chlupatý kaktus.