| Barry Lyga | American writer | 1971 |
| John Lyly | English politician | 1554–1606 |
| Howard F. Lyman | American activist | 1938 |
| Philip Lymbery | Animal welfare advocate | 1965 |
| David Lynch | American filmmaker, televisio… | 1946 |
| Jessica Lynch | Recipient of the Purple Heart… | 1983 |
| Scott Lynch | American writer | 1978 |
| Robert Staughton Lynd | American sociologist | 1892–1970 |
| Robert Wilson Lynd | Irish writer | 1879–1949 |
| Russell Lynes | American art historian | 1910–1991 |
| Victor Lyngdoh | catholic archbishop | 1956 |
| Anni-Frid Lyngstad | Swedish female singer | 1945 |
| Loretta Lynn | American country-music singer… | 1932 |
| Jeff Lynne | British rock musician | 1947 |
| David Lyon | British sociologist | 1948 |
| Natasha Lyonne | actress | 1979 |
| Daniel Lyons | American writer | 1960 |
| Steve Lyons | American baseball player | 1960 |
| Bernard Lyot | French astronomer | 1897–1952 |
| Jean-François Lyotard | French philosopher | 1924–1998 |
| Henry Francis Lyte | Anglican priest, hymn-writer … | 1793–1847 |
| Nigel Lythgoe | Executive producer and televi… | 1949 |
| George Lyttelton, 1st Baron Lyttelton | British politician | 1709–1773 |
| Humphrey Lyttelton | English jazz trumpeter | 1921–2008 |
| Lady Constance Lytton | | |
| Louisa Lytton | actress | 1989 |
| Robert Bulwer-Lytton, 1st Earl of Lytton | English statesman and poet | 1831–1891 |
