Sey is a surname. Notable people with the name include:
Amie Bramme Sey (born 1987) Swedish television and radio presenter of Gambian and Swedish heritage Awa Santesson-Sey (born 1997), Swedish singer of Senegalese and Swedish heritage Coby Sey, British musician of Akan Ghanaian heritage Jacob Wilson Sey, Akan Fante artisan, farmer, philanthropist, nationalist on the Gold Coast (present-day Ghana) Jennifer Sey (born 1969), American writer, producer and former gymnast Kwesi Sey, British music producer of Akan Ghanaian heritage Mary Sey (1952–2024), Gambian judge who currently serves as a Justice of the Supreme Court of the Gambia and was also a Judge of the Supreme Court of Vanuatu Omar Sey (born 1941), Gambian politician Seinabo Sey, Swedish pop soul singer of Gambian and Swedish heritage
See also Seys, a surname