| Honorific-Prefix: | The Right Honourable |
| The Lord Pethick-Lawrence | |
| Honorific-Suffix: | PC |
| Order: | Leader of the Opposition |
| Term Start: | 21 January 1942 |
| Term End: | February 1942 |
| Primeminister: | Winston Churchill |
| Predecessor: | Hastings Lees-Smith |
| Successor: | Arthur Greenwood |
| Order1: | Financial Secretary to the Treasury |
| Term Start1: | 11 June 1929 |
| Term End1: | 24 August 1931 |
| Monarch1: | George V |
| Primeminister1: | Ramsay MacDonald |
| Predecessor1: | Arthur Samuel |
| Successor1: | Walter Elliot |
| Order2: | Secretary of State for India and Burma |
| Term Start2: | 3 August 1945 |
| Term End2: | 1947 |
| Monarch2: | George VI |
| Primeminister2: | Clement Attlee |
| Predecessor2: | Leo Amery |
| Successor2: | The Earl of Listowel |
| Birth Name: | Frederick William Lawrence |
| Birth Place: | London, England |
| Death Place: | Hendon, London, England |
| Party: | Labour |
| Alma Mater: | Trinity College, Cambridge |
Frederick William Pethick-Lawrence, 1st Baron Pethick-Lawrence, PC (né Lawrence; 28 December 1871 - 10 September 1961) was a British Labour politician who, among other things, campaigned for women's suffrage.
Born in London as Frederick William Lawrence, he was the son of wealthy Unitarians who were members of the Liberal Party. Three of his father's brothers, William, James, and Edwin, were politically active in various roles, including as Lord Mayor of London and as members of parliament. Frederick was educated at Wixenford,[1] Eton, and Trinity College, Cambridge,