William Herbert Bloss Sr. (April 4, 1869 – June 22, 1921) was an American college football player and coach.

He was heralded by contemporaries as a "great coach" and one of the fiercest players on the field of the first two decades of football in the Pacific Northwest.

The school later known as Oregon State University's first season of football was in 1893, and Bloss was instrumental in organizing the team.

[4] He was regarded years later as "a great coach and one of the fiercest players that ever figured in the game in the Northwest.

Over 500 spectators who paid a dime admission cheered on SAC (State Agriculture College of Oregon) to 62–0 win, a blowout by today's standards but even worse considering touchdowns were only worth four points at the time.

"[3] During his last 14 years, Bloss worked as a district sales manager for the Ohio Brass Company.