deOliveira is a Brazilian luthier shop based in Natal, Rio Grande do Norte, that has been building handmade electric basses since 2004. The workshop is overseen by chief luthier Mucio, with Alan Plinio managing day-to-day operations and quality control. While primarily known for basses, the shop has also produced guitars and ukuleles, and develops its own onboard preamps under the deOliveira name.

The lineup includes models such as the Rainbow, Dream, Mirage, Music Way, Wave, and Salt, along with headless and single-cut semi-hollow variants like the Rainbow Headless and Mirage SG. Instruments are typically built from Brazilian tonewoods with maple necks and outfitted with Bartolini pickups paired with deOliveira's own active electronics, which provide bass, mid, and treble controls along with active/passive switching.

The brand has a strong following among bassists in northeastern Brazil and is regularly discussed on Portuguese-language forums such as ContrabaixoBR, as well as on TalkBass. Build times generally run 45 to 60 days per instrument, reflecting the shop's small-batch, made-to-order approach.

deOliveira has 2 products cataloged on Equipboard, including Electric Basses and Fretless Basses.