Yaroslav Yaroslavenko (March 30, 1880 – June 26, 1958) was a Ukrainian composer who wrote the music for "Za Ukrainu" and a son of Ukrainian writer and poet Demeter Więckowski and Anna de Weryha-Wysoczańska-Pietrusiewicz.
He studied at the Lviv Conservatory from 1898 to 1900, and graduated with a degree in engineering from the Lviv Polytechnic Institute in 1904. He co-founded the Torban music publishing house in 1906 and was its director for over thirty years.
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