Sebastiaan
Sebastiaan, in the past also Sebastiaen, is the Dutch form of the masculine given name Sebastian. People with the name include:
- Sebastiaen van Aken, Flemish historical painter
- Sebastiaan van Bemmelen, Dutch volleyball player
- Sebastiaan Bleekemolen, Dutch racing driver
- Sebastiaan Bökkerink, Dutch footballer
- Sebastiaan Bowier, Dutch cyclist
- Sebastiaan Braat, Dutch cricketer
- Sebastiaan Brebels, Belgian footballer
- Sebastiaan Bremer, Dutch painter and photographer
- Sebastiaan van den Brink, Dutch footballer
- Sebastiaan De Wilde, Belgian footballer
- Sebastiaan Gokke, Dutch cricketer
- Sebastiaan van de Goor, Dutch volleyball player
- Sebastiaan Haring, Dutch philosopher, writer, and television presenter
- Sebastiaan van Houten, American fangsmith and vampire book author
- Sebastiaen Jansen Krol, Dutch Director of New Netherland from 1632 to 1633
- Sebastiaan Nooij, Dutch baseball player
- Sebastiaan Rutten, Dutch martial artist
- Sebastiaan Steur, Dutch footballer
- Sebastiaan Tromp, Dutch Jesuit priest, theologian, and Latinist
- Sebastiaan Verschuren, Dutch freestyle swimmer
- Sebastiaen Vrancx, Flemish painter and draughtsman
- Sebastiaan Weenink, Dutch squash player
