Adriaan Joseph van Rossem (December 17, 1892 in Chicago – September 4, 1949)[1] was an American ornithologist of Dutch ancestry.

Van Rossem went on to attend both public and private schools.

In his teens he became influenced by Joseph Grinnell who led him into ornithology.

[1] He later did much work with Donald Ryder Dickey and shared the 1941 Brewster Medal with him.

He was a 1939 Guggenheim Fellow and received an honorary doctorate from Occidental College in 1948.