IHeartRadio Countdown

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iHeartRadio Countdown

iHeartRadio Countdown Logo.
Genre	Music chart show, talk
Running time	Approx. 2 hrs. (including commercials) 1 hr. + 37 min. (w/out commercials)
Country of origin	United States
Home station	CHR: KIIS-FM (Los Angeles) WHTZ (New York City) HOT AC: KBIG (Los Angeles) WHYN-FM (Springfield, Massachusetts)
Syndicates	Premiere Networks, ARN, Shanghai Media Group, dms Broadcasting
Hosted by	CHR: JoJo Wright (2018–present) Romeo (2014-2018) Hot AC: Mario Lopez (2014-present) Various guest hosts
Created by	iHeartRadio
Executive producer(s)	iHeartMedia, Inc.
Original release	January 14, 2014 – present
Website	Official Website

iHeartRadio Countdown is a globally-syndicated, independent song countdown radio program. The countdown is based on the popular iHeartRadio, an Internet radio platform owned by iHeartMedia, Inc. (formerly Clear Channel Broadcasting, Inc.) The show premiered on January 14, 2014 on selected iHeartMedia-owned stations, and is syndicated by Premiere Networks and ARN in Australia. Internationally, the show airs on Shanghai's KFM 98.1 and the Cayman Islands' X107.1.

As of 2018, the iHeartRadio Countdown is currently aired in two editions: the CHR edition (hosted by KIIS-FM’s JoJo Wright since 2018; previously it was hosted by Romeo since its launch) and the Hot AC edition (hosted by Mario Lopez).