The 26-year-old centre-back will line up under Tony Pulis next season after agreeing a temporary move from Al Ahly
West Brom have announced the signing of Egypt international Ahmed Hegazi on a season-long loan.
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The 26-year-old joins the Premier League club from Al Ahly for the 2017-18 campaign with the option to make the move permanent.
The centre-back has already travelled to Hong Kong to link up with the squad for pre-season duties in the Premier League Asia Trophy.
"We're pleased he's here, he's a good addition," West Brom boss Tony Pulis told the club's website.