Dropped out from University of Iowa to pursue modeling. His major was biochemical engineering.
Used to have a job sweeping the floor at a General Mills plant
Won the Fresh Faces of Iowa modeling contest in 1997, sparking a modeling career in New York City.
Has a fraternal twin brother, Michael, & an older sister, Tausha
He auditioned for a role at NBC and knew he didn't land it. As he was leaving, an executive asked him to read for a new NBC pilot called "Wind on Water" (1998). "I went and did a cold reading of the character and found out I had gotten the job but told them I had to read the script first and after reading it, decided I did not want to be a cowboy surfer. My agent had told me about a series called "Teenage Wasteland" (later renamed "That '70s Show" (1998)) and I went in to read and told them I had to know if I had gotten the role by 3:45 that afternoon. I was supposed to tell NBC if I wanted the role on "Wind on Water" (1998) by 4:00 p.m. Luckily, I got the role on this show". "Wind on Water" (1998) was canceled after two episodes.
Was once so poor, he donated his blood for money while attending the University of Iowa.
Lost out to Josh Hartnett for a role in Pearl Harbor (2001).
Often wears the same beaded necklace in pictures, interviews, etc.
One of Teen People Magazine's 25 Hottest Stars Under 25. 
His twin brother Michael was born with a septal heart defect.
On January 23, 2004, he went head to head with his _"That '70s Show" (1998)_ co-star Topher Grace at the box office as The Butterfly Effect (2004) starring Kutcher and Win a Date with Tad Hamilton! (2004) both opened against one another. The Butterfly Effect (2004) won the race coming in at the #1 spot, while Win a Date with Tad Hamilton! (2004) came in at #3 just after Along Came Polly (2004).
Older sister Tausha (born 1975) has a daughter, Dakota (born 1999).
Voted #3 on VH1's 100 Hottest Hotties.
Member of the Delta Chi Fraternity, along with Kevin Costner and Alan Heitz.
Has two toes on his left foot that are fused together, meaning they are webbed
Is ranked #35 on Premiere Magazine's 50 Most Disturbing Moments in Movie History. Kutcher's face is just placed there, instead of an explanation as to why.
Shares a birthday with Chris Rock.
Owns a restaurant in Los Angeles called Dolce.
Ranked #17 in TV Guide's list of "TV's 25 Greatest Teen Idols" (23 January 2005 issue).
Lost the lead role of Drew Baylor in Elizabethtown (2005) to Orlando Bloom when Cameron Crowe decided he wanted an actor that had a solid résumé consisting of Theatre and Drama school training.
Was the first of the six primary cast members of "That '70s Show" (1998) to receive a Razzie Award nomination. He was nominated for Worst Actor of 2004 for his roles in the films Cheaper by the Dozen (2003), Just Married (2003) and My Boss's Daughter (2003). However, he did not win.
Tallest cast member of "That '70s Show" (1998).
Along with Topher Grace, he chose not to renew his contract to do an 8th season of "That '70s Show" (1998), wishing to pursue other projects.
Created the MTV show "Punk'd" (2003) with his friend Jason Goldberg.
Of mostly Irish American descent. He also has some Native American and Bohemian (the source of his surname) ancestry
Former boyfriend of Brittany Murphy
His wedding with actress Demi Moore was attended by about 100 guests, among them were Moore's ex-husband Bruce Willis, their three children, and Lucy Liu.
Best friends with Wilmer Valderrama
Stepfather of Rumer Willis, Scout LaRue Willis and Tallulah Belle Willis
Marriage to Demi Moore is his first, her third.
His parents are Larry Kutcher (an employee of General Mills) and Diane (who worked for Procter & Gamble)
Is of Irish ancestry
While as a guest on "The View" (1997), he explained he quit smoking cigarettes for his role in The Guardian (2006/I) by reading the book, "The Easy Way to Stop Smoking" by Allen Carr.
Has the rare distinction of being in two movies that opened on the same day in the U.S. - Open Season (2006) and The Guardian (2006/I) (September 29 2006).
Was considered for the role of Batman in Batman Begins (2005), but the role eventually went to Christian Bale.
Is a member of the Delta Chi Fraternity.
Attended the University of Iowa, as did Gene Wilder, Ben Rollins, and Mary Beth Hurt.
Wrestled in high school. In his senior year he injured himself and had to quit.
Is close friends with "Smallville" (2001) star Tom Welling whom he met when they were both modeling.