Robert Lyon

Robert Lyon may refer to:

• Robert Menli Lyon (1789–1874), early settler in Western Australia
• Robert Lyon (politician) (1832?–1888), Canadian politician in Ontario
• Robert Adam Lyon (1829–1901), Canadian businessman and politician
• Robert Lyon (duellist) (1812–1833), last Canadian killed in a duel
• Robert Lyon (journalist) (1810–1858), English-American journalist and newspaper editor and publisher
• Robert W. Lyon (1842–1904), American politician, mayor of Pittsburgh, Pennsylvania
• Robert Lyon (British Army officer) (1923–2019), British general
• Bob Lyon (born 1955), American politician from Kansas