Gustav Ipavec (15 August 1831 – 20 August 1908) was a Slovenian composer.
A native of Šentjur, he lived in that town for much of his life.
He was a physician in his professional life; as a composer he wrote mainly small choral pieces for amateur performers.
His son was the composer and physician Josip Ipavec; his brother, Benjamin Ipavec, was also a composer and physician.
This article about a Slovenian composer is a stub.