William Irvine (c. 1298- ?) (also known as William de Irwin) was a Scots soldier. He was granted land in Aberdeenshire in 1323 by Robert the Bruce for faithful service. This grant included a defensive work known as the Drum Tower, thus William became the first Laird of Drum. The holding later became the site of Castle Drum. William was Keeper of the Rolls for Scotland from 1328 to 1331.