Peter Steinfeld

Long before Hailee Steinfeld was walking red carpets, her father was already working the fitness circuit, training clients most people only see on magazine covers. Peter Steinfeld, often credited as Peter Steinfeld, built a career around personal training and picked up a string of small acting roles along the way. Today he’s better known for something else entirely: being the hands-on trainer and steady presence behind his daughter’s career, and the brother of an even more famous fitness name, Jake Steinfeld.

Peter Steinfeld Biography

From New Jersey Kid to Hollywood Trainer

Peter grew up in the Passaic and Wayne area of New Jersey before moving to California in 1978 at age 12. He studied business and nutrition at California State University, Northridge, and it was there that his path toward fitness training really took shape. His older brother Jake, who by then was already building the Body by Jake brand, brought him into the fold as a personal trainer in the early 1980s.

By 1990, Peter had branched out on his own, launching a training company called Better Shape-Up. His client list over the years has reportedly included Madonna, Glenn Frey, Ozzy Osbourne, and Larry David, the kind of roster that comes from years of word-of-mouth in the entertainment industry.

Peter Steinfeld Movies: What He Actually Appeared In

There are two different people named Peter Steinfeld with entertainment industry credits, and they often get confused with each other. The one behind films like Drowning Mona, Analyze That, Be Cool, and 21 is a screenwriter and producer named Peter L. Steinfeld, born and raised in Wayne, New Jersey, with no connection to the Steinfeld family that includes Hailee, Griffin, and Jake.

The Peter Steinfeld who’s Hailee’s father has a much smaller, mostly TV-based acting résumé, usually billed as Pete Steinfeld. He picked up recurring bit parts on Married… with Children between 1989 and 1994, playing a lifeguard, a character named Rock Turboman, and later a role simply called Pete. He also turned up in single episodes of Matlock, Martin, Sisters, Father Dowling Mysteries, and had a dinner guest role on Curb Your Enthusiasm in 2000, which appears to be his last on-screen credit. A few of his earlier film work, including The Principal and Limit Up, came through his fitness training background rather than acting itself.

Peter Steinfeld’s Brother and Siblings

Peter isn’t the only Steinfeld who made a name in fitness. He’s actually one of three brothers, with Jake Steinfeld, of Body by Jake fame, as his older brother, and Andrew Steinfeld as his twin. Andrew worked as an executive within Body by Jake during its early growth years, meaning fitness training runs through nearly the entire male side of the family, not just Peter and Jake.

Peter Steinfeld’s Net Worth

Solid, verified financial figures for private individuals like Peter are hard to come by, and most of what circulates online traces back to unsourced celebrity-net-worth sites rather than anything confirmed. One frequently cited estimate puts his net worth around $1 million, built through decades of personal training work rather than his acting or Hollywood connections. That number should be treated as a rough public estimate rather than a confirmed figure.

Peter Steinfeld and Hailee Steinfeld’s Fitness Journey

This is where Peter’s story connects most directly to why people search his name. He’s remained Hailee’s personal trainer for years, not just as a parent offering encouragement but as her actual fitness coach through demanding physical roles, including the archery, stunt, and combat training she needed for Hawkeye. Hailee has spoken publicly about training with her dad, describing their sessions as something she genuinely looks forward to, and continued working with him again through her postpartum fitness routine after welcoming her first child with husband Josh Allen in 2026.

His son Griffin Steinfeld took a different route entirely, moving into stock car racing and stunt driving rather than fitness, though he still worked alongside Hailee professionally as a stunt driver on her 2018 film Bumblebee. Between Peter’s training background, Griffin’s motorsports career, and Hailee’s acting and music work, the family has built three fairly distinct careers out of the same household.

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