Robert Walter Speer (December 1, 1855 – May 14, 1918) was elected mayor of Denver, Colorado three times.

He died from Influenza, early on in the worldwide epidemic of that year on May 14, 1918, while halfway through a third term in office that had started in 1916.

[1] Speer was born in Mount Union, Pennsylvania, on December 1, 1855.

[2] As an adherent of the City Beautiful movement, Speer initiated several projects that added new landmarks, updated existing facilities, and signed Speer Amendment for non-political administration, and dropped his Democrat affiliation in 1916 When elected to third term; improved the city's landscape including: Speer was the first mayor of Denver to die while serving in office.

Speer Boulevard in Denver is named in his honor.