Robert Knowles
Robert Knowles may refer to:
- Robert P. Knowles (1916–1985), American politician, member of the Wisconsin Senate
 - Robert E. Knowles (1925–1988), American politician, member of the Florida House of Representatives.
 - Robert Edward Knowles (1868–1946), Canadian writer and clergyman.
 - Robert Knowles (parasitologist) (1883–1936), British parasitologist
 - Rob Knowles (born 1947), Australian politician
 - Captain Robert Knowles, a fictional character in Bernard Cornwell's Sharpe series
 - Robert Knowles (entomologist), see Timeline of entomology since 1900
 
See also
- Robert Knolles (c. 1325–1407), English knight of the Hundred Years' War
 - Robert Knollys (disambiguation), same pronunciation