Peter McDonald may refer to:Peter J. McDonald (1912–1971), Canadian politician Peter McDonald (critic), Northern Irish poet and academic Peter McDonald (actor), Irish stage and screen actor Peter McDonald (artist), Japanese/English artist Peter McDonald (demographer), Australian demographer Peter McDonald (cyclist), Australian cyclist Peter McDonald (footballer) (1924–2022), Irish footballer Peter McDonald (MP) (1836–1891), Irish member of parliament Peter D. McDonald, professor of English