Robert Eldon Campbell (August 15, 1871 – May 5, 1965) was a provincial politician from Alberta, Canada.

He served as a member of the Legislative Assembly of Alberta from 1917 to 1921 sitting with the Conservative caucus in opposition.

He ran as a Conservative candidate and defeated High-profile MLA Charles M. O'Brien in an upset victory.

[1] As MLA, he is said to have assisted suffragists to take over the Legislature when they staged a sit-in to get attention in February 1915.

He finished a very distant 3rd place behind Progressive candidate Donald Kennedy and Liberal Frank Oliver.