Robert Ross, 5th Lord Ross

Robert Ross, 5th Lord Ross of Halkhead (1563 – October 1595) was a Scottish nobleman.

Ross was the eldest son and heir of James Ross, 4th Lord Ross, who died on 2 April 1581, by Jean, daughter of Robert, 3rd Lord Sempill. The Rosses of Halkhead, or Hawkhead, in Renfrewshire, were a Lowland family, not apparently related to the Earls of Ross or the Highland family of Ross of Balnagown.

Ross had sasines of the lands of Halkhead on 30 October 1581, of Broomlands and "Roisholm" on 15 May 1583 and of Tarbert, in Ayrshire, in 1590.

On 19 May 1584 Ross attended the parliament in Edinburgh at which the Earl of Angus, the Earl of Mar and Lord Glamis were found guilty of treason.

Towards the end of his life, it appears that Ross fell out with King James. On 29 May 1591, James wrote to Mure of Caldwell, requesting him to use his influence with Ross to bring him to heel. Mure's good offices proved insufficient and, on 30 September 1591, James wrote to Lord Hamilton to inform him that Ross remained in rebellion and to direct him to take steps to bring Ross to justice.

Ross married Jean Hamilton, daughter of Gavin Hamilton of Raploch. She survived him and married Sir Robert Melville before dying in May 1631. Ross had two legitimate sons - James Ross, 6th Lord Ross and Robert (died March 1617) - as well as an illegitimate daughter, Elspeth (who married James Miller, an advocate).