Colonel Valentine Augustus Browne, 4th Earl of Kenmare KP, PC (16 May 1825 – 9 February 1905), styled Viscount Castlerosse from 1853 to 1871, was a British courtier and Liberal politician.

He held office in every Whig or Liberal administration between 1856 and 1886, notably as Lord Chamberlain of the Household under William Gladstone between 1880 and 1885 and in 1886.

[7] When Palmerston resumed office in 1859, Castlerosse became Vice-Chamberlain of the Household,[8] which he remained until 1866,[9] the last year under the premiership of Lord Russell.

[1] He consequently resigned as Vice-Chamberlain (a post normally held by a commoner) and in February 1872 he was appointed a Lord-in-waiting, i. e. a government whip in the House of Lords.

They had three children: Lord Kenmare died on 9 February 1905, aged 79, and was succeeded in the earldom by his eldest and only surviving son, Valentine.