Trevor Christian Björklund (b. 1977) is an American composer and trombonist/tubist. He completed the Ph.D. in Music Composition from the University at Buffalo, where he studied with David Felder. From 2001 – 2004 he lived in Germany where he studied composition with Younghi Pagh- Paan at the Hochschule für Künste in Bremen, and privately with Claus-Steffen Mahnkopf, Frank Cox, and Mark Randall Osborn. Björklund has taught composition and theory at the University of Pittsburgh and the University at Buffalo.

His music has been performed in the USA, Germany, Switzerland, The Netherlands, The Czech Republic, France, Italy, and South Korea.

Trevor teaches at the College of Marin in Kentfield, California teaching music theory and media music, and directs the Golden Gate Brass Band.