Sir Robert Lauder of Beilmouth, Knt., (died 24 June 1709) was an armiger, lawyer and Clerk of Exchequer in Scotland. In 1683 he was made a Justice of the Peace for Haddingtonshire. As Robert Lauder of Belhaven he was in the old Scottish parliament for Haddington in 1685, and, as Sir Robert Lauder of Beilmouth, in 1704. He was also Commissioner of Supply for Haddington in 1689 and 1690.