| Head of the River Fours | |
|---|---|
| Frequency | Annual |
| Location(s) | Championship Course, River Thames in London, England |
| Years active | 1955 – present |
| Participants | 480 crews |
| Website | www |
The Fuller's Head of the River Fours (HOR4s) is a processional rowing race held annually on the Tideway of the River Thames in London on the 4+1⁄4-mile (6.8 km) Championship Course from Mortlake to Putney.