Seppo Erkki Sakari Heikinheimo (3 June 1938 – 26 May 1997) was a Finnish musicologist, music journalist, writer and translator.

He wrote three voluminous biographies, on Martti Talvela (1978), Aarre Merikanto (1985) and Oskar Merikanto (1995), and translated numerous works of fact and fiction into Finnish, including books by Roald Dahl, Maxim Gorky, Daniel Barenboim, Garri Kasparov, Yuri Lyubimov and others.

Of special significance is his translation of the controversial Testimony by Dmitri Shostakovich which he made directly from the Russian-language manuscript.

He was critical of the Soviet Union but was a friend of many Russian musicians like Vladimir Ashkenazy, Valery Gergiev, Sergey Musaelyan.

It is a book full of vivid and snarky anecdotes from home and abroad, spanning Heikinheimo's whole career, with 924 names in the personal index.