Andrew Jameson, Lord Ardwall (1845–1911) was a Scottish barrister and judge.
Born at Ayr on 5 July 1845, he was eldest son of Andrew Jameson, sheriff of Aberdeen and Kincardine, by his wife Alexander, daughter of Alexander Colquhoun Campbell of Barnhill, Dumbartonshire. Educated at Edinburgh Academy, he graduated M.A. from the University of St Andrews in 1865. He afterwards attended Edinburgh University, and on 19 May 1870 he passed at the Scottish bar, where he gradually built up a practice.
In 1882 Jameson was appointed junior counsel to the department of woods and forests. On 27 April 1886 he was made sheriff of Roxburgh, Berwick and Selkirk. Having taken part in politics as a Liberal Unionist, he received from Lord Salisbury's government in 1890 the office of sheriff of Ross, Cromarty and Sutherland on 28 November 1890, and became sheriff of Perthshire on 27 October 1891.
On the resignation of Henry Moncreiff, 2nd Baron Moncreiff, Jameson was raised to the bench, on 6 January 1905, with the title of Lord Ardwall. In the same year he was made honorary LL.D. of St. Andrews. After an illness of about six months he died, at 14 Moray Place, Edinburgh, on 21 November 1911, and was buried at Anwoth in Kirkcudbrightshire.
Jameson conducted inquiries on behalf of the government, acted as an arbiter in industrial disputes, and was for some years, in succession to Lord James of Hereford, chairman of the board of conciliation, between the coalowners and Scottish Miners' Federation. As a member of the Free Church of Scotland, he supported Robert Rainy in promoting its union with the United Presbyterians (1900), though he had opposed Rainy during the agitation for disestablishing the Church of Scotland. During the later part of his career he paid attention to agriculture.