2011 E3 Prijs Vlaanderen

{{Infobox cycling race report

| name = 2011 E3 Prijs Vlaanderen – Harelbeke

| image =E3 Prijs Harelbeke-2011 poster.svg

| image_caption =

| date = 26 March 2011

| stages = 1

| distance = 222

| unit = km

| time = 4h 34' 49"

| speed =

| first = Fabian Cancellara

| first_nat = SWI

| first_natvar =

| first_team = {{UCI team code|LEO|2011}}

| second = Jürgen Roelandts

| second_nat = BEL

| second_natvar =

| second_team = {{UCI team code|OLO|2011}}

| third = Vladimir Gusev

| third_nat = RUS

| third_natvar =

| third_team = {{UCI team code|KAT|2011}}

| previous = 2010

| next = 2012

|image_size=325}}

The 2011 E3 Prijs Vlaanderen – Harelbeke took place on 26 March 2011. It was the 54th edition of the international classic E3 Prijs Vlaanderen – Harelbeke and is rated as a 1.HC event on the UCI Europe Tour. This edition was won by {{UCI team code|LEO|2011}}'s rider Fabian Cancellara.{{Cite web|url=http://www.cyclingnews.com/races/e3-prijs-vlaanderen-harelbeke-1-hc/results|title=E3 Prijs Vlaanderen - Harelbeke 2011: Results|date=26 March 2011}}

File:E3 Harelbeke 2011, keisse en weylandt (20071459480).jpg and Wouter Weylandt during the race]]