Robert or Bob Casey may refer to:

• Bob Casey Sr. (1932–2000), 42nd Governor of Pennsylvania, 1987–1995
• Bob Casey Jr. (born 1960), his son, current United States Senator from Pennsylvania, 2007–present
• Robert E. Casey, no relation to any of the above, Pennsylvania Treasurer, 1977–1981
• Robert R. Casey (1915–1986), member of the United States House of Representatives from Texas
• Bob Casey (baseball announcer) (1925–2005), Minnesota Twins baseball announcer
• Bob Casey (third baseman) (1859–1939), Canadian baseball player
• Bob Casey (rugby union) (born 1978), London Irish rugby player
• Robert Casey (journalist) (1890–1962), American journalist
• Robert K. Casey (1931–2015), member of the Florida House of Representatives
• Robert F. Casey (1921–2006), member of the Illinois House of Representatives
• Robert G. Casey (born 1967), American priest of the Catholic Church
• Bob Casey (musician) (1909–1986), American jazz bassist

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