Preston Albert Watson (17 May 1880 – 30 June 1915) was a Scottish aviation pioneer, who conceived his own original method of controlling an aeroplane in flight. This was his rocking wing method of lateral control, which consisted of a secondary smaller wing mounted above the main wing on an A-frame that could pivot about its longitudinal axis. Watson's method of lateral control was applied by him in three different aeroplanes; the first was built in late 1909, the second in July 1910 and his third in 1913.