|City of license||San Antonio, Texas|
|Broadcast area||San Antonio, Texas|
|Slogan||The Most Country|
|Frequency||100.3 MHz (also on HD Radio)|
|Audience share||4.5, #6 (Fa'07, R&R)|
|Callsign meaning||CountrY (music format)
|Former callsigns||KLLS (1981-1983)
|Owner||Cox Radio, Inc.|
|Sister stations||KISS-FM, KKYX, KONO, KONO-FM, KPWT, KSMG|
KCYY (100.3 FM) is a radio station broadcasting a Country music format. Licensed to San Antonio, Texas, USA, the station serves the San Antonio area. The station is currently owned by Cox Radio after the sale by New City Communications. The station previously has had an Adult Contemporary format, known as KLLS, or "Klassy 100", until switching to Country. The station is headquartered in Suite 600 at 8122 Datapoint Drive in San Antonio.
During the 70s the station was KSAQ Q-100 which had a Contemporary Top-40 Format. KMFM was on 96.1 playing a middle of the road format. By the early 1980s KMFM flipped to KSLR 96.1 FM Son Light Radio as a Christian format. Salem communications acquired Rock Format KMAC 630AM and flipped it to KSLR 630 and KSAQ moved to 96.1FM/760 "Super Q" and KLLS 100.3 was reborn as Adult Contemporary "Class 100 FM."