Etherington is the Hammers' 2nd longest serving player behind Christian Daily after joining from
This season the left winger has scored 3 goals in 17 appearances linking up well with George McCartney.
Ethers told the official site, "I am delighted to have signed a new contract and commit my future to West Ham. I have always been happy here since the day I arrived and I look forward to the next four-and-a-half years."
"There have been a lot of ups and downs both personally and on the pitch but the club have stood by me as have the fans and for that I will always be grateful. That is why I have committed my future here."