Hanns Jelinek (5 December 1901 – 27 January 1969) was an Austrian composer of Czech descent who is also known under the pseudonym Hanns Elin.
Jelinek studied briefly with Franz Schmidt, Arnold Schoenberg and Alban Berg. The latter two influenced him to write many works in the twelve-tone technique. Later, he studied music on his own; from 1958 on, he was a lecturer and after 1965, a professor at the Vienna Academy of Music. In 1966, he was awarded the Grand Austrian State Prize.
Alireza Mashayekhi, one of the most important representatives of new music in Persia (Iran), studied under Jelinek for a while.
Jelinek was born and died in Vienna.