Robert Willis may refer to:
Sciences and technology Robert Willis (physician) (1799–1878), 19th century physician, medical historian and librarian Robert Willis (engineer) (1800–1875), 19th century engineer, phoneticist, and architectural historian Robert Willis (hacker), hacker and comic books writer
Sports Robert Watson Willis (1843–1892), 19th century footballer and administrator Bobby Willis (footballer) (1901-1974), English footballer Bob Willis (footballer) (born 1942), Australian rules footballer Bob Willis (1949–2019), English cricketer Robert Willis (sailor) (born 1987), American Olympic windsurfer
Other Robert Willis (diplomat) (1868–1921), English administrator in China Robert Willis (minister) (1785–1865), Canadian minister Bob Willis (trade unionist) (1904–1982), British trade union leader Bobby Willis (1942–1999), British songwriter Robert Willis (priest) (1947–2024), Church of England priest and Dean of Canterbury