"One Call Away" is a song by American singer Charlie Puth for his debut album Nine Track Mind. It was released on August 20, 2015 by Atlantic Records as the second single from the album, after the lead single "Marvin Gaye". "One Call Away" is a gospel-infused pop soul song. It reached number 12 on the Billboard Hot 100, making it Puth's third top 40 single in the US and his second highest-charting single as a lead artist to date, behind "We Don't Talk Anymore".

In the United States, "One Call Away" debuted at number 89, in the week ending December 19, 2015. In the UK, the song debuted at number 73, in the week ending December 3, 2015. As of February 2016, the song has sold 513,700 copies domestically.

In New Zealand, the song debuted at number 39, in the week ending October 12, 2015; the next week, it jumped from 39 to 9, becoming his third hit top ten in New Zealand. It reached its peak, number 3, the following week.

Directed by Mark Staubach, the music video for "One Call Away" was released on September 14, 2015 by his own YouTube channel.

It begins with Puth playing Rachmaninoff's "Morceaux de fantaisie, Op. 3, Prelude No. 2 in C-sharp minor" on a grand piano in a college music classroom, before he's interrupted by a girl (played by Ellie Hahn) who comes into the room to watch, before she puts on headphones, and the actual song begins. It then cuts to clips of him walking to and sitting down in class. He nudges his friend as he sees the girl sit down behind him, still wearing her headphones. He looks back at her and she smiles, but her boyfriend then sits down next to her, which Puth sees, and then sinks down into his chair.

Puth and a couple of classmates are shown sitting in a gymnasium, while looking at her status updates on a Facebook-like website. He is then shown walking down a bookstore, while she is reading on the other side; he gets to the end of the aisle and they see each other, but she walks away dismissively. Shots of film being cut and hung up are shown. She is then shown practicing a ballet on stage with Puth accompanying on grand piano. Her boyfriend comes, they get in a fight, and she leaves, sitting down outside and covering her face with her hands, to cry.

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