Strossmayeria is a genus of fungi in the family Helotiaceae. The genus contains 16 species. The genus was circumscribed by Stephan Schulzer von Müggenburg in Oesterr. Bot. Z. vol.31 on page 314 in 1881. The genus name of Strossmayeria is in honour of Josip Juraj Strossmayer (1815–1905), who was an Austrian-Hungarian clergyman. He was Bishop of Đakovo, Croatia.