Lord Simon may refer to multiple peerages in the United Kingdom:
Hereditary peers Holders of the peerage Viscount Simon John Simon, 1st Viscount Simon (1873–1954) John Gilbert Simon, 2nd Viscount Simon (1902–1993) Jan David Simon, 3rd Viscount Simon (1940–2021) Holders of the peerage Baron Simon of Wythenshawe Ernest Simon, 1st Baron Simon of Wythenshawe (1879–1960) Roger Simon, 2nd Baron Simon of Wythenshawe (1913–2002) Matilda Simon, 3rd Baroness Simon of Wythenshawe (born 1955)
Life peers David Simon, Baron Simon of Highbury (born 1939) Jack Simon, Baron Simon of Glaisdale (1911–2006)