from Wikipedia:
Koop or KOOP or koop may refer to:
People
C. Everett Koop, the Surgeon General of the United States from 1982-1989Wanda Koop, a Canadian painterBooba, a French rapper also known as B2O and Élie Yaffa
Culture and entertainment
Koop (band), a Swedish jazz duo consisting of Magnus Zingmark and Oscar SimonssonKOOP (FM), a radio station (91.7 FM) in Austin, Texas, United States"Never Koop a Koopa", a Super Mario Bros. television series episode
Companies
Koop Dairy, dairy products company in Cyprus