| Honorific-Prefix: | The Right Honourable |
| Lord Walter Gordon-Lennox | |
| Order1: | Treasurer of the Household |
| Term Start1: | 20 November 1891 |
| Term End1: | 11 August 1892 |
| Monarch1: | Victoria |
| Primeminister1: | The Marquess of Salisbury |
| Predecessor1: | The Earl of Radnor |
| Successor1: | The Earl of Chesterfield |
| Birth Date: | 1865 7, df=yes |
| Nationality: | British |
| Party: | Conservative Party |
| Children: | 1 |
| Parents: | Charles Gordon-Lennox, 6th Duke of Richmond Frances Harriett Greville |
| Honorific Suffix: | PC |
Lord Walter Charles Gordon-Lennox, (29 July 1865 - 21 October 1922) was a British Conservative politician. He served as Treasurer of the Household from 1891 to 1892 under Lord Salisbury.
Gordon-Lennox was the youngest of the four sons of Charles Gordon-Lennox, 6th Duke of Richmond, by his wife Frances Harriett Greville, daughter of Algernon Greville.[1] He was educated at Eton and Christ Church, Oxford.
Gordon-Lennox entered Parliament in 1888 as Member of Parliament for Chichester, a seat he held until 1894. In 1891 he was sworn of the Privy Council and appointed Treasurer of the Household under Lord Salisbury, a post he retained until the government fell the following year.
Gordon-Lennox married Alice Ogilvy-Grant, daughter of the Hon. George Henry Ogilvy-Grant and granddaughter of Francis Ogilvy-Grant, 6th Earl of Seafield, on 6 July 1889. They had at least one child, Victor Charles Hugh Gordon-Lennox (1897–1967). Gordon-Lennox died in October 1922, aged 57. Lady Walter Gordon-Lennox died in March 1946, aged 90.[1]