iHeartRadio Countdown HOT AC Chart
About Mario Lopez
About Courtney Lopez
Advertise on On With Mario Lopez
Contests & Promotions
On with Mario Lopez's $5,000 Giveaway
All Contests & Promotions
> April 2019
Chad Michael Murray Talks Joining The Cast of 'Riverdale'!
Mario's Daughter & Maroon 5 Superfan Gia Gets To Talk To Adam Levine!
iHeartRadio Countdown - Rick Springfield in Studio! (April 27, 2019)
Roman Christou Breaks Down His First Movie 'The Curse of La Llorona'!
Mario Sits Down With Curtis Scoon to Talk New Doc 'Black, White & Blue'!
Martin Kove Talks The Return of John Kreese in Season 2 of 'Cobra Kai'!
Kelly Clarkson's Daugther Stars in New 'Ugly Dolls' Soundtrack Song!
Macklemore Explains Hilarious New Video & Talks Big MusiCares Honor!
Mark Ronson & Lykke Li Drop 70's Inspired Video For 'Late Night Feelings'!
Courtney's Corner: Getting The Best Prices on Airline Tickets!
iHeartRadio Countdown - Rascal Flats Guitarist Joe Don Rooney Checks in!
Joe Don Rooney Talks New Rascal Flatts Music & HUGE Summer Tour!
John Shin Drops Life Changing Knowledge on New Episode of 'Listen To Mario'
The Legendary Rick Springfield in Studio Talking New Music, Tour & More!
Live Stream Weekend 2 of Coachella! Including Kanye's Easter Service!
Mario Busts Courtney Documentary Cheating! Does Your Spouse Do it?
LISTEN: Andy Grammer Talks New Song, New Podcast & More!
Alex Landi Talks Joining 'Insatiable' Season 2 & 'Grey's Anatomy' Finale!
Pablo Schreiber Previews New Seasons of 'American Gods' & 'OITNB'!
iHeartRadio Countdown - Can Halsey Keep The #1 Spot? (April 13th, 2019)
LISTEN TO MARIO: Kate Del Castillo Talks Meeting 'El Chapo' & More!
Ellie Goulding Takes Us Back To Her Teenage Years in New Song 'Sixteen'!
Seth Crossno & His Lawyer Stacy Miller Talk Fyre Festival Lawsuit & More!
Coachella Set Times Are Out! Live Stream The EPIC Weekend Right Here!
WATCH: BTS Drops 'Boy With Luv' Teaser Trailer Featuring Halsey!
The Hilarious Kevin James Previews His New Stand Up Tour!
Jimmy Kimmel & Celine Dion Surprise Couple During Vegas Wedding!
Chrishell Hartley Talks Going From 'Days of Our Lifes' to Reality TV!
The Lopez Family Takes on 'Wrestlemania 35' in New York City!
iHeartRadio Countdown - Robin Thicke in Studio! (April 6th, 2019)
MOVIE REVIEW: Gia and Nico Are Loving The New Superhero Movie 'SHAZAM!'
LISTEN TO MARIO: Robert Shapiro Tells Untold Stories From OJ Trial & More!
'This Is Us' Star Faithe Herman Previews Her New Movie 'SHAZAM!'
Courtney's Corner: Avoid Getting Stains on Your Work Clothes!
Isla Fisher Talks Oscars, New Children's Book 'Marge In Charge' & More!
WATCH: Jimmy Fallon's EPIC 'Game of Thrones' April Fools' Prank!
Craig Ferguson Previews Hilarious New Book 'Riding The Elephant' & More!
Karamo Brown Talks Season 3 of Netflix's 'Queer Eye', New Book & More!
PHOTOS: Lopez Family Vacation Fun in Costa Rica!