Found 8 symbols starting with KO:

Kōban
Japanese map symbol for Kōban
KOF-K Kosher Supervision Symbol
The KOF-K emblem is the internationally recognized trademark of KOF-K Kosher Supervision, one of the foremost Kosher certification agencies in the United States.
Kojo Baiden
Rays
kongregate logo
the logo of the games web kongregate
Kontire Ne Akwamu
Seal of Law and Order
Korean Unification Flag
Korean Unification Flag 1991 - Present
Kosovo (Apple iOS 10.3)
Flag for Kosovo
Kotwica Symbol
The Kotwica was a World War II emblem of the Polish Secret State and Armia Krajowa (Home Army, or AK).