Delvon Lamarr Organ Trio, also known as DLO3, is an American soul-jazz group founded in 2015. The band has released two albums. Their debut album titled Close But No Cigar charted at number one on the U.S. Contemporary Jazz Albums chart.

Delvon Lamarr Organ Trio was founded in 2015 and originally consisted of keyboardist Delvon Lamarr Dumas on Hammond B-3, guitarist Colin Higgins and drummer David McGraw. Soon after guitarist Jimmy James replaced Higgins. All members had been active instrumentalists in the Seattle music scene. With the help of Lamarr's wife, Amy Novo, acting as manager and booking agent, the group was solidified. Originally a drummer and trumpet player, Lamarr switched to organ at age twenty-two. He said he picked up the instrument naturally by observing organ keyboardist Joe Doria. James and McGraw had previously co-founded The True Loves, a Seattle-based soul band.

The band has toured in the United States and abroad and has performed in several music festivals including the Detroit and the Monterey Jazz Festivals. The trio's debut album Close But No Cigar was originally released in 2016 (on CD), and was re-released in March 2018 (on both LP and CD) by Colemine Records. The album reached number one on the U.S. Contemporary Jazz Albums chart and number three on the U.S. Jazz Albums chart. In April 2018, the band released a live album titled Live at KEXP! (on both LP and CD) that was recorded May 13, 2017. It reached number 10 on the Jazz Albums chart. In 2018 the band toured nationally and in Europe in support of the albums. In late 2018, drummer Doug Octa Port replaced McGraw. Drummer Michael Duffy joined the band for their 2019 European Tour.