"TEMS" may stand for:

• Transanal Endoscopic Mucosal Surgery, an endoscopic surgery method to remove rectal polyps
• Tactical EMS, a type of emergency service
• Terrestrial Ecosystem Monitoring Sites, directory of sites and networks that carry out terrestrial in-situ monitoring and research activities
• TEst Mobile System, InfoVista network monitoring and real-time diagnostics suite
• Timothy Edwards Middle School, a Middle School in South Windsor, Connecticut
• Toyota Electronically Modulated Suspension
• Tufts Emergency Medical Services, a student volunteer group that provide emergency medical services to the Tufts community
• Toronto EMS, the statutory Emergency medical services provider for the city of Toronto, Ontario, Canada

• Order Of The Star Of The Grand Cross Of The Iron Cross
• Order of the Star of the North
• Order of the Star of the Romanian People's Republic
• Order of the Star of the Romanian Socialist Republic
• Order of the State of Republic of Turkey
• Order of the Sun (Peru)
• Order of the Sword (Devil May Cry)
• Order of the Throne
• Order of the Two Rivers
• Order of the Uhuru Torch
• Order of the Umayyads
• Order of the United Republic of Tanzania
• Order of the Virtues (Egypt)
• Order of the Volta
• Order of the Vytis Cross
• Order of the War Banner
• Order of the Wendish Crown
• Order of the Wheel of the Thunder Dragon
• Order of the White Double Cross
• Order of the White Eagle (Russian Empire)
• Order of the White Lady (France)
• Order of the Yellow Ribbon
• Order of The Yugoslav Crown
• Order of the Zähringen Lion
• Order of Thrones