| Marine Medium Tiltrotor Squadron 164 | |
|---|---|
 Old HMMT-164 unit insignia | |
| Active | 1 July 1964–present |
| Country | United States |
| Branch | United States Marine Corps |
| Type | Medium-lift Tiltrotor Squadron |
| Role | Assault support |
| Part of | Marine Aircraft Group 39 3rd Marine Aircraft Wing |
| Garrison/HQ | Marine Corps Air Station Camp Pendleton |
| Nickname(s) | "Knightriders" "Flying Death" (Vietnam) |
| Motto(s) | "Against all odds" |
| Tail Code | YT |
| Engagements | Vietnam War *Operation Eagle Pull *Operation Frequent Wind Operation Desert Storm Operation Restore Hope *Operation Inherent Resolve |
| Commanders | |
| Commanding Officer | LtCol Casey D. Nelson |
| Executive Officer | Maj John Brown |
| Aircraft flown | |
| Cargo helicopter | CH-46 Sea Knight (1965–2015) MV-22B Osprey (2015–Present) |
Marine Medium Tiltrotor Squadron 164 (VMM-164), is a United States Marine Corps tiltrotor squadron operating the MV-22B Osprey. Known as the Knightriders, they fall under the command Marine Aircraft Group 39 (MAG-39) and the 3rd Marine Aircraft Wing (3rd MAW). They are based at Marine Corps Air Station Camp Pendleton.