The name Greg Olsen refers to several notable individuals, most prominently an American football figure and a pioneering space traveler. Greg Olsen (born 1985) is a well-known American football sportscaster who previously had a significant career as a tight end in the National Football League. Another prominent figure bearing a similar name, Gregory Olsen (born 1945), is an American entrepreneur, engineer, and scientist, famously known for his journey as one of the first private space tourists. The name is also associated with Gregg Olsen, a notable American crime author, among other variations.