| 1st Division, King's Guard | |
|---|---|
| กองพลที่ 1 รักษาพระองค์ | |
&sq=engine&lang=en&file=File:Emblem_of_the_1st_Infantry_Division,_King%27s_Guard.svg) Emblem of the 1st Division, King's Guard | |
| Active | 1905 – present |
| Country |  Thailand |
| Branch |  Royal Thai Army |
| Type | Combined arms |
| Size | division |
| Part of | 1st Army Area 1st Army Corps |
| Garrison/HQ | Dusit subdistrict, Dusit, Bangkok |
| Nickname(s) | Wongthewan (วงศ์เทวัญ, Divine clique) |
| Engagements | |
| Website | https://1divisionkingguard.rta.mi.th/index2.html |
The 1st Division, King's Guard (Thai: กองพลที่ 1 รักษาพระองค์) (พล.๑ รอ.) is an infantry division of the Royal Thai Army, it is currently a part of the 1st Army Area. King Chulalongkorn (Rama V) founded the division in 1905. The Royal Command of King Bhumibol Adulyadej (Rama IX) designated the division as a King's Guard unit in 1973.
The division comprises one infantry regiment and four attachment units, the 31st Infantry Regiment, King's Guard. The division and its subsidiary units are mostly based in or around Bangkok, Thailand. The 31st Regiment is garrisoned in Lopburi.