Kaleb Stewart (June 9, 1975 – March 25, 2021) was an American musician, vocalist, songwriter and former skateboarder. Originally from Talkeetna, Alaska, he moved around in his childhood before settling in Tampa, Florida as a teenager, and later made his home in Gainesville, Florida. While in Gainesville, he notably played bass guitar and provided backing vocals in the melodic hardcore band As Friends Rust from 1998 to 2000, and in the hardcore punk band Bridgeburne R from 1999 to 2000 (both with lead vocalist Damien Moyal). Stewart took part of As Friends Rust's reunion in 2008, and remained with the band until 2019.

Prior to joining As Friends Rust, Stewart had a short-lived professional skateboarding career, sang in the post-punk band The Sarx and the punk rock band Southpaw (both based in Tampa), and played bass guitar in the Gainesville punk rock band Sissy. Following his time in As Friends Rust, he played guitar and provided backing vocals in the punk rock band The Sheryl Cro(w) Mags (later renamed Cro(w)s), with his best friend Chris Wollard (of Hot Water Music), which was sporadically active from 2000 to 2004, and sang in the acoustic folk duo Goodnight at the End of the Tunnel with Moyal in 2005.

He began performing solo material under his own name in 2000, but by November 2001, his project had taken up the moniker Grey Goose. After recruiting several band members, including his brother Levi Stewart, Grey Goose evolved into a proper post-hardcore band. Following Grey Goose's hiatus in 2005, Stewart returned to playing solo material under the short-lived project Bread Riot.

Stewart resumed his solo career in 2015, altering between bookings under his own name and as Grey Goose. By mid-2017, he had abandoned the Grey Goose moniker and steadily performed under his own name. He prolifically recorded a series of solo albums and EPs over the next three years and promoted the releases with five European tours before dying in 2021.

Kaleb Stewart was born Caleb Benjamin Stewart in Talkeetna, Alaska on June 9, 1975, to Michael Leon Stewart and Mary E. (née Ferguson). He had five siblings: older brothers Justin and Levi, younger brother Seth, and younger sisters Lydia and Essie. He grew up in a religious environment, with his parents and grandparents working as missionaries. As such, his family moved to various locations when he was a child, first to Hillsdale, Michigan in 1982, then to Cochabamba, Bolivia in 1990, and finally to Tampa, Florida in 1992.

Stewart was introduced to music by his maternal grandparents, Milton McNeil Ferguson and Elizabeth Anne Elliott, who lived in Hillsdale, Michigan and brought him to country gospel music concerts at their local religious venue, The Gospel Barn. Stewart later noted the Bill Gaither Trio as the first band he remembered seeing live. His father also listened to blues music and introduced him to Lead Belly; Stewart would later name his solo project Grey Goose, after the folk song made famous by Lead Belly. While living in Hillsdale, Stewart and his siblings attended Lenawee Christian School in Adrian, Michigan.

In 1990, his family relocated to Cochabamba, Bolivia, as part of their missionary work, before returning to the United States and settling in Tampa, Florida in the fall of 1992. Already in his senior year, Stewart attended Gaither High School in Tampa, graduating with the class of 1993. While in high school, Stewart began spelling his first name with a "K" instead of a "C", as "Kaleb".

Stewart and his younger brother Seth began skateboarding during high school and quickly became part of the local Tampa, Florida skateboarding scene after moving there in 1992. In early 1994, Stewart was noticed by a representative of New Deal Skateboards and received a sponsorship. He moved to Los Angeles, California (where his older brother Justin was based) and joined the company's professional skateboarding team, competing in local and international competitions. Stewart traveled to the United Kingdom and Europe in July and August 1994, to compete in international skateboarding competitions, including the 13th edition of the Münster Monster Mastership World Cup 94 in Münster, Germany. By the end of 1994, after suffering a knee injury and being disenchanted with the professional skateboarding society, Stewart returned to Tampa.