Robert Hamilton, 8th Lord Belhaven and Stenton

Robert Montgomery Hamilton, 8th Lord Belhaven and Stenton KT (1793 – 22 December 1868) was a Scottish peer and politician.

Hamilton sat on the Whig benches in the House of Lords as a Scottish representative peer between 1819 and 1832.

The latter year he was created Baron Hamilton of Wishaw, in the County of Lanark, in the Peerage of the United Kingdom.

Having been previously the county's vice-lord-lieutenant, he was appointed Lord Lieutenant of Lanarkshire in 1863, an office he held until his death five years later.

Hamilton died on 22 December 1868, aged 75 and was buried in Cambusnethan Kirkyard, where his large mausoleum still stands, although the kirk no longer exists.