| Province: | ON |
| Type: | ON 1960 |
| Route: | 87 |
| Maint: | the Ministry of Transportation of Ontario |
| Established: | 1937 |
| Decommissioned: | 1998 |
| Length Km: | 30.1 |
| Direction A: | West |
| Terminus A: | in Bluevale |
| Direction B: | East |
| Terminus B: | near Harriston |
| Previous Type: | ON |
| Previous Route: | 86 |
| Next Type: | ON |
| Next Route: | 88 |
King's Highway 87, commonly referred to as Highway 87, was a provincially maintained highway in the Canadian province of Ontario. The 30.1km (18.7miles) route connected Highway 86 in Bluevale with Highway 89 (present-day Highway 23) near Harriston.[1] In 1997-1998, Highway 87 was downloaded to Huron and Wellington counties and the road is now officially known as Huron County Road 87 and Wellington County Road 87.