The Green Howards (Alexandra, Princess of Wales's Own Yorkshire Regiment) was an infantry regiment of the British Army, in the King's Division. Originally raised in 1688, they served under various titles until they were amalgamated with The Prince of Wales's Own Regiment of Yorkshire and The Duke of Wellington's Regiment, all Yorkshire-based regiments in the King's Division, to form The Yorkshire Regiment on 6 June 2006.

In 1875 Princess Alexandra, Princess of Wales presented new colours to the 1st Battalion at Sheffield, and consented to the regiment bearing her name, thus becoming the 19th (1st Yorkshire North Riding – Princess of Wales's Own) Regiment of Foot. The Princess became Queen Alexandra in 1901, and was the regiment's Colonel-in-Chief from 1914 until her death in 1925.

In 2004, as part of the re-organisation of the infantry, it was announced that the Green Howards would merge with the Prince of Wales's Own Regiment of Yorkshire (PWO) and the Duke of Wellington's Regiment (DWR) to form the new Yorkshire Regiment.