Jack Antonoff's handedness is not consistently documented, leading to uncertainty. He is an American singer, songwriter, and record producer whose influence permeates the modern music scene. Born in Bergenfield, New Jersey, Antonoff began his musical journey in the early 2000s, playing in various bands before achieving mainstream success. He is best known as the lead singer of the band Bleachers and as a guitarist and songwriter for the indie pop band Fun.

Antonoff's career has been marked by collaborations with some of the biggest names in the music industry. He has co-written and produced songs for artists such as Taylor Swift, Lorde, Lana Del Rey, and Florence + The Machine, earning critical acclaim and numerous awards for his work. His distinctive production style, characterized by its layered instrumentation and emotional depth, has made him one of the most sought-after producers of his generation.

Beyond his work with other artists, Antonoff has continued to release music with his band Bleachers. Their albums, known for their anthemic melodies and introspective lyrics, have resonated with audiences and cemented Antonoff's reputation as a talented songwriter and performer. He has also ventured into film scoring, composing the soundtrack for the movie 'Love, Simon'.

Antonoff's contributions to the music industry have been widely recognized, earning him multiple Grammy Awards and nominations. His ability to blend pop sensibilities with artistic experimentation has made him a leading voice in contemporary music. He continues to push boundaries and explore new creative avenues, solidifying his legacy as one of the most innovative and influential musicians of his time.

There is no publicly available information to determine if Jack Antonoff is left-handed.