Sir Howard Elphinstone, 2nd Baronet (9 June 1804 – 16 March 1893)^[1] was a British Whig politician.

Born in Plymouth, Elphinstone was educated at the High School of Edinburgh and Trinity College, Cambridge, where he graduated BA in 1826.^[2] He was elected as member of parliament (MP) for Hastings at the 1835 general election, having unsuccessfully contested the seat in 1832.^[3] He did not stand for re-election in Hastings at the 1837 general election, but stood instead in Liverpool, where he did not win a seat.^[4] He returned to the House of Commons at the 1841 general election, when he won one of the two seats in Lewes. He did not stand again in 1847.^[5]

He was elected a Fellow of the Royal Society in June 1832.^[6]

Elphinstone was the son of Lt.-Gen. Sir Howard Elphinstone, 1st Baronet (1773–1846) and Frances Warburton (died 1858). He was a barrister, and had the degrees of MA and Doctor of Civil Law (D.C.L.). He married Elizabeth Julia Curteis, in 1829, and they had two children.

He succeeded to his father's baronetcy in 1846, and on his death was succeeded by his son Howard Warburton Elphinstone (1830–1917).