Minamoto no Hiromasa (源 博雅, 918 – September 28, 980) was a nobleman and gagaku musician in the Heian period.

In 966, by the order of Emperor Murakami, he compiled an imperial music anthology, the Shinsen gakubu (新撰楽譜, also called Hakuga no Fue-fu meaning "Hiromasa's Flute Score").

There is a story that he was called upon to participate in the so-called "Forth Year of Tentoku Poetry Contest" in 960, but that he froze in front of the emperor and accidentally gave the title of one poem while he recited another.

After three years of visiting Semimaru in Osaka, he was taught the secret tunes "Flowing Spring" and "Woodpecker".

About his personality, Fujiwara no Sanesuke made the following comment in his diary the shoyuki: "As for Hiromasa, he's a poet and a writer, but he neglects his duties."