K5 or K-5 may be: Military · K5 pistol, used by the South Korean police and military · HMS K5, a Royal Navy submarine sunk in 1921 · Krupp K5, railway gun of World War II Germany · Kaliningrad K-5, a Soviet-era air-to-air missile Technology · AMD K5 CPU chip released in the 1990s · Kerberos protocol Version 5 Other · [LINK: http://www.k5.com] K5.com, an action sports retailer based in San Diego, CA · [LINK: http://www.k5consulting.com] K5 Consulting, Technology Consulting Firm in San Francisco · K5 Club, a sex club in Prague, Czech Republic · Chevrolet K5 Blazer · Gasherbrum I, 11th highest mountain peak · K-5 , a state highway in Kansas · Kuro5hin, community discussion web site · K-5 , Kinde