Gavin Perry Casalegno, born on September 2, 1999, is an American actor who has captured the attention of a global audience with his compelling performances, most notably as Jeremiah Fisher in the hit television series The Summer I Turned Pretty. Growing up in the Dallas-Fort Worth area of Texas, Casalegno was drawn to the performing arts from a young age, beginning his career as a child model and actor. He made his screen debut with a small role in the 2009 independent film The Last Song, but it was his early work in television that helped him hone his craft, including appearances on shows like The Vampire Diaries and Walker, Texas Ranger: Test of Faith. His family, including his siblings, often supported his ambitions, and he balanced his burgeoning career with a typical childhood, attending local schools in Texas before eventually moving to Los Angeles to pursue acting full-time.

Casalegno’s breakthrough came when he was cast as the younger version of Matthew McConaughey's character in the 2014 film Interstellar, a role that showcased his ability to hold his own opposite seasoned actors. This performance opened doors for him in the industry, leading to a series of guest-starring roles on popular series such as The Fosters, Noah, and The Young and the Restless. He also appeared in the 2016 thriller The Darkness alongside Kevin Bacon and Radha Mitchell, demonstrating his range in a horror genre setting. By the late 2010s, Casalegno had established himself as a versatile young actor capable of handling both dramatic and lighthearted material, which made him a perfect fit for the romantic drama genre.

The actor’s career reached a new height in 2022 when he was cast as Jeremiah Fisher, one of the lead characters in the Amazon Prime Video series The Summer I Turned Pretty, based on the novels by Jenny Han. The show, which follows the romantic entanglements of a teenage girl and two brothers, became a cultural phenomenon, and Casalegno’s portrayal of the charming, emotionally complex Jeremiah earned him widespread acclaim and a dedicated fanbase. His chemistry with co-stars Lola Tung and Christopher Briney was a highlight of the series, and he received praise for bringing depth to a character navigating love, jealousy, and family loyalty. The series was renewed for a second and third season, cementing his status as a rising star in Hollywood.

Outside of his work on The Summer I Turned Pretty, Casalegno has continued to expand his filmography with projects that challenge him as an actor. He starred in the 2022 romantic drama The Unicorn and has been attached to several upcoming films, though details remain under wraps. He is also active on social media, where he engages with fans and shares glimpses of his personal life, including his love for photography, travel, and spending time with his family and friends. Casalegno remains grounded despite his rapid rise to fame, often crediting his parents and siblings for keeping him focused on his goals. As he continues to take on new roles, he is widely regarded as one of the most promising young talents in the entertainment industry, with a bright future ahead in both television and film.