DL
- DL – Dexter's Laboratory
- DLA – (i) U.S. Defense Logistics Agency – (i) Dental Laboratories Association
- DLIC – (i) Detachment Left-In-Contact
- DLIR – (i) Depot-Level Inspection and Repair
- DLL – (i) Dynamic Link Library
- DLPFC or DL-PFC – (i) DorsoLateral PreFrontal Cortex
- DLPMC – (i) DorsoLateral PreMotor Cortex
- DLR – (i) Deutsches Zentrum für Luft- und Raumfahrt (German, German Aerospace Centre) – Docklands Light Railway
- DLRP – (i) Data Link Reference Point
- DLS – (i) Deep Lens Survey
- DLSA – (i) (U.S.) Defense Legal Services Agency
- DLSc – (p) Diploma in Library Science
- DLSC – (i) U.S. Defense Logistics Services Center – U.S. Defense Logistics Support Command – Department of Library Special Collections (Western Kentucky University Libraries) – Direct Loan Servicing Center – Directorate of Land Strategic Concepts (Canada) – Dominican Lay Scholars Community
- DLTBGYD – Don't let the bastards grind you down
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