Updated June 9, 2019 Share: Boy name origins & meanings French : Marshy land near the sea; prayerEnglish : From Sidon Boy name variations Seymour Seymour + 20% this year Masculine Rare Find out more Seamor Seamor 0 % this year Masculine Rare Find out more Seamore Seamore 0 % this year Masculine Rare Find out more Seamour Seamour 0 % this year Masculine Rare Find out more Si Si + 20% this year Masculine Rare Find out more Sydney Sydney - 6% this year Neutral Common Find out more Syd Syd 0 % this year Neutral Rare Find out more How Popular Is The Name Sy Family name origins & meanings Hispanic (Philippines) : unexplained.African : unexplained.