"Hummingbird Heartbeat" is a song recorded by American singer Katy Perry for her third studio album, Teenage Dream (2010). It was written by Perry, Christopher "Tricky" Stewart, Stacy Barthe, and Monte Neuble. Stewart handled the production of the song, while Kuk Harrell produced Perry's vocals. "Hummingbird Heartbeat" was inspired by Perry's boyfriend at the time, Russell Brand. Musically, it is a 1980s-styled hard rock song that contains a mixture of elements from rock and electronica. Lyrically, the song compares the feeling of being in love to the speed of a hummingbird's heartbeat.

"Hummingbird Heartbeat" was serviced to Australian radio as the seventh single from Teenage Dream on September 17, 2012. The song received generally positive reviews from music critics, many of whom labeled it as a potential single choice. Upon the release of Teenage Dream, "Hummingbird Heartbeat" charted on the lower regions of the South Korea Gaon International Chart, peaking at 124.

In an interview with YouTube about Teenage Dream in August 2010, Perry revealed that "Hummingbird Heartbeat" was one of the first songs she wrote for the album after she finished her Hello Katy Tour (2009). When speaking about the song, Perry said she first had the idea for the song while she was in her hometown of Santa Barbara, California:

"I was at breakfast when I saw this hummingbird, and hummingbird was having breakfast as well..... and I don't know if you know but hummingbirds are supposedly good luck and I was just thinking about hummingbirds. I was thinking 'How fast does their heart beat?' , like 'how many beats per minute?' And using that idea as an idea for someone making you feel, instead of those butterflies, making your heart beat really, really fast."

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