Studio Daydream is a boutique handmade guitar pedal manufacturer based in Okayama, Japan, established in 2008. The company occupies a "secret weapon" niche in the Japanese boutique scene — relatively under-the-radar internationally, but well regarded among informed players for build quality and tone. Pedals are sold direct through the brand's web store and through a small handful of specialty retailers, and tend to sell out quickly.

The lineup centers on overdrives, preamps, and utility devices. Notable products include the Dhyana, a Dumble-style overdrive; the KCM-OD Gold and Silver, two variants of a Klon-style overdrive; the JRM-OD, voiced after a blackface Fender amp; the FETBOX, a JFET-based dual-channel preamp / junction box; the Ray, a natural-sounding compressor with a three-band EQ; and the TRIGGER2 routing controller. Construction emphasizes hand-wired internals and careful component selection, with pricing positioned at the lower end of the Japanese boutique range.

Studio Daydream has 3 products cataloged on Equipboard, including Overdrive Effects Pedals and Switch Effects Pedals. Their gear is featured by 2 artists, with the strongest followings in Rock. Notable users include yuuho kitazawa and Yusuke (Lynch).