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Kevin Mac Allister (born 7 November 1997) is an Argentine professional footballer who plays as a centre-back or full-back for Belgian Pro League club Union SG.
Mac Allister received a call-up to the Argentina U20 squad for the 2017 South American Youth Football Championship in Ecuador. However, he missed the tournament through injury.
Kevin Mac Allister is of Scottish and Irish descent. He has two brothers, Alexis and Francis, who are also professional footballers. They are the sons of Carlos Mac Allister and nephews of Patricio Mac Allister. Kevin younger brother, Alexis is a 2022 FIFA World Cup winner. His cousin, Luciano Guaycochea is also a professional footballer.

| Season | Apps | Goals | Assists | Mins | Y | R | Rating |
|---|---|---|---|---|---|---|---|
| 2025 | 31 | 1 | 1 | 2693 | 11 | 1 | 7.18 |
| 2025 | 34 | 2 | 1 | 2693 | 12 | 1 | 7.18 |
| 2025 | 34 | 2 | 1 | 2693 | 12 | 1 | 7.18 |
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