Robert Anthony (Casper) Asbjornson (June 19, 1909 – January 21, 1970) was a catcher in Major League Baseball who played for the Boston Red Sox (1928–1929) and Cincinnati Reds (1931–1932).

Asbjornson was 19 years old when he debuted with the Boston Red Sox in 1928, being one of seven catchers used by the Red Sox in an unsuccessful attempt to replace retired Grover Hartley.

Later, he saw more action with the Cincinnati Reds as a backup for Clyde Sukeforth and Ernie Lombardi in part of two seasons.

In a four-season career, Asbjornson was a .235 hitter with one home run and 27 RBI in 97 games.

This biographical article relating to an American baseball catcher born in the 1900s is a stub.