| 18th Division | |
|---|---|
| Sư đoàn 18 | |
&sq=Envato&lang=en&file=File:ARVN_18_Division_SSI.svg) ARVN 18 Division insignia | |
| Active | 16 May 1965 – 30 April 1975 |
| Country |  South Vietnam |
| Branch |  Army of the Republic of Vietnam |
| Type | Division |
| Role | Infantry |
| Nickname(s) | "The Supermen" |
| Motto(s) | God Arrow – Defending the Fatherland |
| Engagements | Vietnam War |
| Commanders | |
| Notable commanders | Lữ Mộng Lan Đỗ Kế Giai Lâm Quang Thơ Lê Minh Đảo |
| Insignia | |
| Division flag | &sq=Envato&lang=en&file=File:18th_Infantry_Division%27s_flag.png) |
The 18th Division (Vietnamese: Sư đoàn 18; Chữ Hán: 師團18) was an infantry division in the III Corps of the Army of the Republic of Vietnam (ARVN). The U.S. Military Assistance Command Vietnam considered the 18th as undisciplined and was well known throughout the ARVN for its "cowboy" reputation. In 1975 the 18th was made famous for its tenacious defense of Xuân Lộc, the last major battle before the Fall of Saigon.