The Battle of Riyadh was a minor battle in Riyadh, then part of the Emirate of Ha'il, fought between the Rashidi dynasty and the House of Saud in January 1902 that resulted in the latter's takeover of walled town by Abdul-Aziz Ibn Saud. The battle is considered a prelude to the 30-year old unification war, culminating in the establishment of Saudi Arabia in 1932.
In late 1901, following the end of the Second Saudi State, the Al Saud clan was forced to move to Kuwait after Riyadh had fallen to the Al Rashid family. Ibn Saud, the head of the clan, requested supplies and men from the Kuwaiti Emir to retake his hometown. The Kuwaiti prince, who was also involved in several wars with the Rashidis, acceded to Ibn Saud's request and gave him horses and arms.