Markeyvius LaShun Cathey (born August 3, 1997), known professionally as Key Glock, is an American rapper from Memphis, Tennessee.

The cousin of late Memphis rapper Young Dolph, Cathey signed with his record label, Paper Route Empire, to release his commercial mixtape, Glock Season (2017).

His debut studio album, Yellow Tape (2020), peaked at number 14 on the Billboard 200 and received gold certification by the Recording Industry Association of America (RIAA).

His second album, Yellow Tape 2 (2021), peaked at number seven on the chart and spawned the multi-platinum-certified single "Ambition for Cash", as well as "Proud", which was released in the wake of Dolph's death and marked his first entry on the Billboard Hot 100.

[3] Cathey said he grew up listening to Gucci Mane, Lil Wayne, and cites Three 6 Mafia as his largest influence.

[3] On January 25 of that year, Glock released his debut single "Racks Today" featuring American rapper Jay Fizzle.

[8] Young Dolph's "Major" featuring Key Glock reached number 47 on the Hot R&B/Hip-Hop Songs chart.