| Unit Name: | 198th Infantry Brigade |
| Dates: | 1967–1971 2007–present |
| Country: | United States |
| Branch: | United States Army |
| Role: | Infantry One Station Unit Training (OSUT) |
| Size: | 5 Battalions + HHC |
| Command Structure: | United States Army Infantry School |
| Garrison: | Ft. Moore, GA |
| Motto: | "Brave and Bold" |
| Battles: | Vietnam War |
| Battle Honours: | Vietnam Service Medal |
| Website: | https://www.benning.army.mil/Infantry/198th/ |
| Current Commander: | COL Jimmy L Hathaway |
| Ceremonial Chief: | CSM Lamont L Holmes |
| Commander2 Label: | Command Sergeant Major |
| Identification Symbol Label: | Distinctive unit insignia |
The 198th Infantry Brigade, was first formed as part of the United States Army Reserve's 99th Division. It was active from 1967 through 1971 and has been active since 2007 as an Infantry Training Brigade as part of the US Army Infantry School at Fort Moore (formerly Fort Benning), Georgia.
During the years of 1967–1971 as part of the Vietnam War the 198th was part of the United States Army's 23rd "Americal" Infantry Division. In 1968, elements of the 198th Infantry Brigade, under the leadership of Lieutenant Colonel Robert B. Nelson, participated in the Battle of Kham Duc. On 21 November 1969, Colonel Joseph G. Clemons, (of Pork Chop Hill fame), assumed command of the 198th Infantry Brigade.
The 198th Infantry Brigade was reactivated on 15 May 2007 at Fort Benning, Georgia to serve as an Infantry Training Brigade.