The Rainbooms (full name: the Sonic Rainbooms), are a fictional girl band from the My Little Pony: Equestria Girls web series. The band first formed at Canterlot High School and first appear performing at the Canterlot High School Musical Showcase (also called the Mane Event) in Rainbow Rocks.

The band’s initial lineup features Rainbow Dash on electric guitar (and also lead vocalist later on), Applejack on bass guitar, Rarity on keytar, Fluttershy on the tambourine, and Pinkie Pie on the drumset. Sunset Shimmer joins as a rhythm guitarist and backup vocalist after the Mane Event. Twilight Sparkle from Equestria temporaily joins the band as a lead vocalist to aid against The Dazzlings, a rival band in the Mane Event. Her human counterpart later joins the band in Legend of Everfree as a backup vocalist. In various episodes of the series, other guests included DJ Pon-3 on turntables, and Sunny Flare, Sour Sweet, Sugarcoat, and Lemon Zest as dancers.

The cutie mark for the Rainbooms features a flying horseshoe with a rainbow streak trailing from it, meant to depict the horseshoe performing an actual rainboom.