Nicholas Alexander

• Nicholas Alexander, 7th [Earl of Caledon], son of Denis Alexander, 6th Earl of Caledon
• Nicholas Alexander of Wallachia, Prince of Wallachia 1352–1364
• Nicholas Alexander (ski jumper), American competitive ski jumper
• Nicholas Alexander, a character from The West Wing List of [The West Wing characters#Situation Room|seasons 5 and 6]