Sem Westerveld (born 18 July 2002) is a Dutch professional footballer who plays as a goalkeeper for club MVV, on loan from AZ.
Westerveld made his professional debut with Jong AZ in a 1–0 Eerste Divisie loss to Roda on 4 January 2021.[1] On 18 June 2021, he signed his first professional contract with AZ for three years.[2]
He suffered a torn cruciate knee ligament in 2024 and spent a year out of action. He returned to the Jong AZ team for a match against Vitesse in April 2025, in a 2–2 draw.[3]
On 2 July 2025, Westerveld joined Eerste Divisie club MVV on a one-season loan.[4] He quickly established himself as a key figure for MVV, producing a series of decisive performances that included a penalty save in a goalless draw away to Jong Ajax. Having struggled with injuries for much of the previous two and a half years, he described the run of form as a personal breakthrough after a "long, dark period".[5]
Westerveld's father Sander Westerveld and grandfather Hennie Ardesch were also professional football goalkeepers.[6] Sem was born in San Sebastián, Spain while his father was playing for Real Sociedad.[7]
