O.P. Entertainment

O.P. Entertainment (: OP 엔터테인먼트) is a Sierran  that operates as a  of Sierran media conglomerate Media Corporation. One of the largest corporations in Sierra, O.P. Entertainment operates as a, , talent agency, and event organizer. Originally founded by Korean-Sierran entrepreneurs Jeong-Ho Yi and Aubrey Rhee in 1997, O.P Entertainment operated as an independent company until 2007 following its acquisition by Media Corporation in 2007 for approximately $1.5 billion in cash and stock with the purposes of expanding the scope of O.P. Entertainment. Initially, O.P. Entertainment had a specialization on Sierran-based (K-pop) but the company has since evolved into a cosmopolitan company featuring a broad range of music, artists, and genres in several languages including pop, hip hop, country, and rock.

As one of the "Big Four" music entertainment in Sierra (the others being the Polygon Records,, and , O.P. Entertainment is one of the largest corporations in the Kingdom with reported revenue of $4.725 billion in 2015.