1986 Liège–Bastogne–Liège

{{Infobox cycling race report

| name = 1986 Liège–Bastogne–Liège

| image =

| image_caption =

| image_size =

| series =

| race_no =

| season_no =

| date = 20 April 1986

| stages = 1

| distance = 252{{cite web|url=http://www.bikeraceinfo.com/classics/Liege-Bastogne-Liege/liege-index.html|title=Liège-Bastogne-Liège (World Tour), Belgium|work=BikeRaceInfo|access-date=24 November 2017}}

| unit = km

| time = 6h 41' 21"

| first = Moreno Argentin

| first_nat = ITA

| first_team = {{ill|Sammontana (cycling team)|lt=Sammontana–Bianchi|ca|Sammontana-Bianchi}}

| second = Adri van der Poel

| second_nat = NED

| second_team = {{UCI team code|KWA|1986}}

| third = Dag Erik Pedersen

| third_nat = NOR

| third_team = {{UCI team code|ARI|1986}}

| previous = 1985

| next = 1987

}}

The 1986 Liège–Bastogne–Liège was the 72nd edition of the Liège–Bastogne–Liège cycle race and was held on 20 April 1986. The race started and finished in Liège. The race was won by Moreno Argentin of the {{ill|Sammontana (cycling team)|lt=Sammontana–Bianchi|ca|Sammontana-Bianchi}} team.