Peter Lambert may refer to:
Peter Lambert (baseball) (born 1997), American baseball pitcher Peter Lambert (brigadier) (contemporary), Australian army officer and defence scientist Peter Lambert (Gaelic footballer) (fl. 1991–2003), retired Irish sportsperson Peter Lambert (rosarian) (1859–1939), German rosarian Peter Lambert (rower) (born 1986), British rower Peter J. Lambert, United States Air Force general
See also Richard Lambert (Richard Peter Lambert, born 1944), British journalist and business executive