The France international joins the Irons on a free transfer having been released by Marseille in November after he attacked a supporter ahead of his side’s Europa League match with Vitoria.
Evra has signed a deal that will keep him at the London Stadium until the end of the current campaign as David Moyes’s side look to fend off the threat of relegation.
— West Ham United (@WestHamUtd) February 7, 2018
The 36-year-old will wear the No.27 shirt and becomes Moyes’ third signing since taking over from Slaven Bilic after the arrivals of Joao Mario and Jordan Hugill in the January window.
“I’m really happy to be a Hammer, to be back in the Premier League and I love this game!” Evra, who has won seven league titles and the Champions League during a career that has also seen him represent Monaco and Juventus, told the club’s official website.
“It’s amazing to be back and I am thankful to West Ham for giving me the opportunity to do my job.
“When I wake up I know I am going to work hard, to have fun with my team-mates and give my best on the pitch.
“I’m just happy to be here, it’s really simple. You don’t realise how lucky you are and just to wake up this morning and know I am going to train with my new team-mates made me smile!”
Evra was also linked with joining Everton, but opted to reunite with Moyes after he played under the Scot during his short tenure at Old Trafford.
“It happened really fast. My agent called me and told me I needed to come back [from Dubai] to London as quick as I could and I had a nice meeting with the manager, who I know from Manchester United, of course, and I met the chairman, so it was really easy.
“When you have to make a deal and money is not the issue, the deal could be done in five minutes. The main thing was for me to join West Ham and to help my team-mates to win as many games as we can.
“It was the fastest thing I have done in my life, because both parties wanted to work together, so it was very easy to make an agreement.”
Evra could make his debut against Watford on Saturday, with fellow left-back Arthur Masuaku suspended for a further four matches after being sent-off for spitting against Wigan Athletic in the fourth round of the FA Cup.