Robert Sullivan may refer to: Robert Sullivan (judoka) (born 1949), British Olympic judoka Robert Sullivan (poet), Māori writer from New Zealand Robert Sullivan (reporter), associated with The New Yorker Robert Baldwin Sullivan (1802–1853), Canadian lawyer, judge, and the second Mayor of Toronto Robert J. Sullivan, Jr. (born 1945), American politician Robert Joseph Sullivan, American football player Dr. Robert Sullivan (educator), Northern Irish educationalist, founder of Sullivan Upper School Robbie Sullivan, fictional character in the television series Modern Family Bobby Sullivan, musician and activist Robert Michael Sullivan, paleontologist, was Senior Curator of Paleontology and Geology at The State Museum of Pennsylvania.