Jim Zubkavich, known professionally as Jim Zub, is a Canadian comic book writer, artist, and art instructor. He is best known for creating the comics Skullkickers (2010), Wayward (2014), and Glitterbomb (2016) for Image Comics, and for writing series such as Thunderbolts (2016), Uncanny Avengers (2017), Avengers: No Surrender (2018), and Champions (2018) for Marvel Comics.

In addition to his work in comics, Zub is an art instructor and has served as the program coordinator for Seneca College's Animation program in Toronto, Canada. He splits his time between his comic writing and his role in education. Zub resides in Toronto with his wife, Stacy King.