Sir Peter Jeffrey Mackie, 1st Baronet, JP (26 November 1855 – 22 September 1924) was a Scottish whisky distiller and writer.

He was educated at Stirling High School and in 1878 joined his uncle's firm, James L. Mackie & Co, at the Lagavulin distillery on Islay.

In the mid-1880s, he became a founding partner in Mackie & Co, which was established to market Lagavulin and other whiskies in London.

In 1890, the two businesses amalgamated as Mackie & Co (Distillers) and began to blend White Horse.

Mackie travelled and wrote extensively on politics, especially on tariff reform and Imperial Federation.