- DMJ stands for Daughters of Mary and Joseph
- DMJ stands for Duke Mathematical Journal (Duke University Press; North Carolina)
- DMJ stands for Diploma in Medical Jurisprudence
- DMJ stands for Do My Jeans (clothing manufacturer)
- DMJ stands for Découverte Montagne Jeunesse (French youth recreation association)
- DMJ stands for Darren Mccormick Jewellery (UK)
- DMJ stands for Dose Moyenne Journalière (French: Daily Average Dose)
- DMJ stands for Davenport, Marvin, Joyce, & Co., LLP (financial planning)
- DMJ stands for Drowning Mary Jane (band)
- DMJ stands for Diabetes Management Journal (Good Health Publications; Australia)
- DMJ stands for Dancing Monkey Jewelry (personal journal)
DMJ