- YDM stands for Yorkshire Devolution Movement (Yorkshire, UK)
- YDM stands for You Disgust Me
- YDM stands for You Da Man
- YDM stands for Young Democrats of Maryland (political organization)
- YDM stands for Your Daily Media (website)
- YDM stands for Yamahachi Dental Mfg., Co. (Japan)
- YDM stands for Your Data Managed (software company)
- YDM stands for You Dirty Mother (polite form)
- YDM stands for Young Dinosaur Movement
YDM