Trivia

Colored his hair blonde in every episode of Saved by the Bell (1989) and wears a blonde wig in the 2020 reboot.

In a 2019 chat on TV with host Andy Cohen, he was asked when he had last spoken to former Saved by the Bell (1989) costar Dustin Diamond, and quickly responded "1994". That fit into the timeline where the famous cast (along with Mario Lopez, Tiffani Thiessen, Elizabeth Berkley, and Lark Voorhies) filmed together for the last time in 1994 on a two-hour TV movie, Saved by the Bell: Wedding in Las Vegas (1994). They also reunited in Saved by the Bell: The New Class (1993) episode, Goodbye Bayside: Part 2 (1994) that same year in late 1994. They recently reunited briefly at a convention in 2019 in Canada where they took photo ops promoting the show's 30th anniversary.

Spoke fluent Dutch at home as a child.

Still keeps in touch with his Saved by the Bell (1989) co-star Mario Lopez.

His Dutch Jewish paternal great-grandparents, Hartog "Herman" Gosselaar and Hester van Emden, were killed in The Holocaust. They died in the Sobibor extermination camp, in Nazi-occupied Poland, on April 9, 1943.

His father is from The Netherlands, and is of Dutch Jewish and German ancestry. His mother is from Bali, Indonesia, and has Dutch and Indonesian ancestry. His paternal grandfather was from a Dutch Jewish family whose ancestry can be traced back to the 1700s; his patrilineal line goes back to his four times great-grandfather, Jacob Nathan Gosselaar, who was born, c. 1733, in Rotterdam.

Is closest to Tiffani Thiessen from his Saved by the Bell (1989) days and thinks of her like a sister.

Spoke the last line of NYPD Blue (1993), in which he referred to the recently-promoted "Sergeant Andy Sipowicz" as "Boss".

Lists Running Zack (1990), the episode where Zack explores and learns about his Native American heritage and forms a close bond with a local Indian, as his favorite episode of Saved by the Bell (1989).

He has played the same character (Zack Morris) in five different series: Good Morning, Miss Bliss (1987), Saved by the Bell (1989), Saved by the Bell: The College Years (1993), Saved by the Bell: The New Class (1993) and Robot Chicken (2001).

He and his wife, Catriona Gosselaar (Catriona McGinn), welcomed their first child, son Dekker Edward Gosselaar, on September 30, 2013, in Los Angeles.

Has competed as a celebrity race car driver.

Children: Michael Charles Gosselaar (b. January 31, 2004) and Ava Lorenn Gosselaar (b. May 7, 2006). Both were born in Los Angeles, California.

He is a blue belt in Brazilian JiuJitsu.

Older brother Mike and older sisters Sylvia and Linda, are all three born in The Netherlands.

Announced that his wife, Lisa Ann Russell, is expecting their 2nd child, a girl, in March 2006. (January 2006)

His wife, Catriona Gosselaar (Catriona McGinn), is an advertising executive.

Announced he and his wife, Catriona Gosselaar (Catriona McGinn), are expecting a baby together in September 2013 to People Magazine. His third. (March 2013)

His wife, Catriona Gosselaar (Catriona McGinn), gave birth to their second child together (his fourth child), a girl named Lachlyn Hope Gosselaar, born on February 17, 2015.

First husband of Lisa Ann Russell.

He is a ninth cousin of Dutch actor Michiel Huisman, through their shared Dutch Jewish eight times great-grandparents, Samuel Speyer and Abigael Levie.

Uncle of Chris Gosselaar.