English abbreviations from smug to sn
- SMUG (Serious Mac User Group)
- SMURF (Secret Military Underground Resistance Force)
- SMUT (Sensational Marvellous Unbelievable Tag)
- SMV (Samedan Airport (Engadin Airport))
- SMVA (Southern Maine Volkssport Association)
- SMW (Schweizerische Medizinische Wochenschrift)
- SMWA (South Mills Water Association)
- SMWC (Saint Mary-of-the-Woods College)
- SMWG (Software Management Working Group)
- SMWW (Sports Management Worldwide)
- SMX (many, including: Server Macro Expansion)
- SMY (Simenti Airport)
- SMYAL (Sexually Minority Youth Assistance League)
- SMYT (Senior Men Y Team)
- SMZ (many, including: Silver Mt. Zion)
- SN (Seaman)