2nd Infantry Division (Thailand)

2nd Infantry Division, Queen Sirikit's Guard
กองพลทหารราบที่ 2 รักษาพระองค์ ในสมเด็จพระนางเจ้าสิริกิติ์ พระบรมราชินีนาถ พระบรมราชชนนีพันปีหลวง
Emblem of the 2nd Infantry Division, Queen Sirikit's Guard
Active	1910-present
Country	Thailand
Branch	Royal Thai Army
Type	Mechanized infantry
Size	Division
Part of	First Army Area
Garrison/HQ	Fort Promyothee, Prachinburi, Thailand
Nickname(s)	Nakrob Burapha (นักรบบูรพา, Eastern warriors) Burapha Payak (บูรพาพยัคฆ์, Eastern tigers)
Motto(s)	Ready for battle and Graceful
Engagements	World War II Franco-Thai War Pacific War Burma campaign Cold War Korean War Vietnam War Cambodian Civil War Laotian Civil War Communist insurgency in Thailand Third Indochina War Cambodian–Vietnamese War Vietnamese border raids in Thailand South Thailand insurgency Cambodian–Thai border dispute
Website	2id.rta.mi.th/2id/

The 2nd Infantry Division, Queen Sirikit's Guard (Thai: กองพลทหารราบที่ 2 รักษาพระองค์ ในสมเด็จพระนางเจ้าสิริกิติ์ พระบรมราชินีนาถ พระบรมราชชนนีพันปีหลวง) (พล.๒ รอ.) also known as Mechanized Infantry Division (Thai: กองพลทหารราบยานเกราะ) is a mechanized infantry division of the Royal Thai Army. It is currently part of the First Army Area. The division was founded by King Chulalongkorn (Rama V) in 1910. In 1988 the division was designated a King's Guard unit by cabinet order, however, as a mark of distinction the division and all its subsidiary units were put under the patronage of Queen Sirikit and has since been known as the Queen's Guard.

The division is composed of three infantry regiments and three attached units, the 2nd Infantry Regiment, Queen's Guard, the 12th Infantry Regiment, Queen's Guard, and the 21st Infantry Regiment, Queen's Guard. The division and its subsidiary units are all based east of Bangkok, headquartered in Prachinburi, with other units in Chonburi and Sa Kaeo.