• Kabbalah
• Kalimantan Evangelical Church +
• Kamon
• Kanjiza ⚐
• Kashub
• Katanga
• Katsuwa
• Katwijk ⚐
• Keltisch
• Kerala
• Kerry ⚐
• Kershaws (Bromley)
• Key of the Nile
• Keys of heaven
• Khachkar
• Khanyile
• Khas
• Kildare ⚐
• King of Glory
• King Solomon
• King's
• Kirby
• KKK
• Knight's
• Knights Templar
• Knotted
• Knut
• Koceljeva ⚐
• Komboskini
• Korean Methodist Church +
• Koru
• Kottakkavu
• Kozak (Cossack)
• Kragujevac ⚐
• Kryžių kalnas
• Krzyz Walecznych
• Ku Klux Klan
• Kukljica ⚐
• Kuna ⚐
• Kutsuwa
• Kyrgyz ⚐

⚐ denotes cross on the flag of a nation or region
+ denotes cross on the emblem of a church or denomination

There are countless more. We are continually updating information on all these crosses and adding more as they become known to us.