1986 Belgian motorcycle Grand Prix

{{Infobox Grand Prix motorcycle race report

| Grand Prix = Belgian

| flag = Belgium

| Official_Name = GP of Belgium{{Cite web |url=http://www.jumpingjack.nl/GP-races_1986_heden.htm |title=Info |access-date=2015-07-25 |archive-url=https://archive.today/20150725153404/http://www.jumpingjack.nl/GP-races_1986_heden.htm |archive-date=2015-07-25 |url-status=dead }}{{cite web|url=http://www.progcovers.com/motor/500cc1986.html|title=1986 500cc Class (FIM Grand Prix World Championship) Programmes - The Motor Racing Programme Covers Project|first=Malcolm|last=Mitchell|website=www.progcovers.com}}{{cite web|url=http://www.progcovers.com/motor/spa.html|title=Spa-Francorchamps - The Motor Racing Programme Covers Project|first=Malcolm|last=Mitchell|website=Progcovers.com|accessdate=4 June 2018}}

| Location = Circuit de Spa-Francorchamps

| Image = Circuit Spa.png

| Course_mi = 4.312

| Course_km = 6.940

| Race_No = 7

| Season_No = 12

| Date = 6 July

| Year = 1986

| Pole_Rider_500 = Randy Mamola

| Pole_Rider_500_Country = USA

| Pole_Time_500 = 2:28.280

| Fast_Rider_500 = Randy Mamola

| Fast_Rider_500_Country = USA

| Fast_Time_500 = 2:48.990

| First_Rider_500 = Randy Mamola

| First_Rider_500_Country = USA

| Second_Rider_500 = Eddie Lawson

| Second_Rider_500_Country = USA

| Third_Rider_500 = Christian Sarron

| Third_Rider_500_Country = FRA

| Pole_Rider_250 = Carlos Lavado

| Pole_Rider_250_Country = VEN

| Pole_Time_250 = 2:34.340

| Fast_Rider_250 = Dominique Sarron

| Fast_Rider_250_Country = FRA

| Fast_Time_250 = 2:55.970

| First_Rider_250 = Sito Pons

| First_Rider_250_Country = ESP

| Second_Rider_250 = Donnie McLeod

| Second_Rider_250_Country = GBR

| Third_Rider_250 = Jacques Cornu

| Third_Rider_250_Country = SUI

| Pole_Rider_125 = Luca Cadalora

| Pole_Rider_125_Country = ITA

| Pole_Time_125 = 2:44.690

| Fast_Rider_125 = Domenico Brigaglia

| Fast_Rider_125_Country = ITA

| Fast_Time_125 = 3:02.050

| First_Rider_125 = Domenico Brigaglia

| First_Rider_125_Country = ITA

| Second_Rider_125 = Lucio Pietroniro

| Second_Rider_125_Country = BRA

| Third_Rider_125 = Willy Pérez

| Third_Rider_125_Country = ARG

| Pole_Rider_80 = No 80cc race was held

| Pole_Rider_80_Country =

| Pole_Time_80 =

| Fast_Rider_80 = No 80cc race was held

| Fast_Rider_80_Country =

| First_Rider_80 = No 80cc race was held

| First_Rider_80_Country =

| Second_Rider_80 = No 80cc race was held

| Second_Rider_80_Country =

| Third_Rider_80 = No 80cc race was held

| Third_Rider_80_Country =

}}

The 1986 Belgian motorcycle Grand Prix was the seventh round of the 1986 Grand Prix motorcycle racing season. It took place on the weekend of 4–6 July 1986 at the Circuit de Spa-Francorchamps.