- Mar 4 Brooklyn Beckham, English model and photographer (son of David and Victoria Beckham), born in London, England
- Mar 12 Janja Garnbret, Slovenian competitive climber, born in Slovenj Gradec, Slovenia
- Mar 13 Wiktoria Gąsiewska, Polish actress, born in Warsaw, Poland
- Mar 14 Marvin Bagley III, American NBA player (Detroit Pistons), born in Temple, Arizona
- Mar 19 Tatum McCann, American actress
- Mar 23 Prince Beltran of Bulgaria
About March 1999
How Old? 23 years old
Generation: Generation Z
Leap Year: No