KUCD (101.9 FM "Pop! 101.9") is a commercial radio station licensed to Pearl City, Hawaii and serving the Honolulu metropolitan area. It broadcasts an Asian Top 40-CHR radio format, playing hits from K-pop and other countries in Asia. It is owned by iHeartMedia, Inc., with studios in the Kalihi neighborhood of Honolulu. It also transmits on Charter Spectrum digital cable channel 853 for the entire state of Hawaii.

KUCD is a Class C station. It has an effective radiated power (ERP) of 100,000 watts (horizontal polarization) and 81,000 watts (vertical polarization). Its transmitter is on Palehua Road in Kapolei. KUCD broadcasts using HD Radio technology. Its HD2 subchannel carries an alternative rock format and feeds 250-watt FM translator K256AS at 99.1 MHz.

KUCD signed on the air in 1991; 33 years ago (1991). It was a smooth jazz station, playing a mix of jazz instrumentals and some R&B-style vocals. It billed itself as "CD 101.9". The smooth jazz sound lasted six years.

On August 29, 1997, at 3 p.m., it switched to modern AC as "Star 101.9." It further evolved towards modern rock in 2001. This lasted until 2009, when it shifted back to modern AC; with this format change, KUCD changed its positioner from "Hawaii's New Music Alternative" to "90's, 2K, and Today". In early 2011, KUCD reverted to the modern rock format, albeit with a slight modern AC lean, using their previous "Hawaii's New Music Alternative" slogan once again. A few months after this, KUCD dropped the modern AC lean, and became a modern rock station once again.

In 2013, the station changed its positioner to "Hawaii's Alternative". With the May 2020 format flip of KPOI from alternative to soft AC, KUCD became the only radio station in Honolulu playing alternative rock music. KUCD's HD2 sub-channel aired Asian Pop formatted PoP! 99.1 at 101.9-2 and on the iHeartRadio app.

On May 16, 2023, iHeartMedia announced that KUCD and K256AS/KUCD-HD2 would swap formats at 10 AM the following Thursday. On May 18th, the full-power 101.9 frequency took over the Asian pop music format of K256AS as "Pop! 101.9". With its high-power signal, it becomes the largest K-pop radio station in the United States. The alternative rock previously found on 101.9 switched over to the 99.1 FM translator.

• 1991 in radio

• KUCD official website
• Facility details for Facility ID 48778 (KUCD) in the FCC Licensing and Management System
• KUCD in Nielsen Audio's FM station database

HD2 translator

• Facility details for Facility ID 152379 (K256AS) in the FCC Licensing and Management System
• K256AS at FCCdata.org