DLO can refer to:
Organizations Dead letter office, part of a postal office Defence Logistics Organisation of the UK military A direct labour organisation within a UK local authority dLocal, a Uruguayan technology company
People D'Lo, Sri Lankan-American writer D'Lo Brown (born 1970), American professional wrestler DLo or D'Angelo Russell (born 1996), American basketball player
Others IATA location identifier for Delano Municipal Airport, California, US D'Lo, Mississippi, U.S., town in Simpson County Dense linear order, in mathematical order theory Discontinuity layout optimization, engineering analysis procedure