MWD may refer to:

• Matte World Digital, an American visual effects company
• Measurement while drilling, a procedure used in oil well drilling
• Metropolitan Water District, in Southern California
• Military working dog, used in warfare
• Murakami-Wolf-Dublin, American animation studio
• PAF Base M.M. Alam (IATA code), a Pakistan Air Force airbase located at Mianwali, Pakistan

• ASCII graphic
• ASCII IPA
• ASCII-IPA
• ASCII (magazine)
• ASCII math notation
• ASCII tab
• ASCIIZ
• ASCI Red
• Ascites
• ASCI Thor's Hammer
• As Cities Burn
• ASCI White
• As Clean As They Wanna Be
• Asclepeion
• Asclepiad
• Asclepiades
• Asclepiades of Bithynia
• Asclepiades of Samos
• Asclepiadoideae
• Asclepiad (poetry)
• Asclepias
• Asclepias incarnata
• Asclepias syriaca
• Asclepias tuberosa
• Asclepi (crater)