SEI

• 7-Eleven
• Emotional Intelligence
• Indonesia
• Indrek Sei
• Kaki King
• Lithium–silicon battery
• SEI Investments Company
• SUNY Eye Institute
• Sadao Sei
• Safety Equipment Institute
• Scanning electron microscope
• Scottish Episcopal Institute
• Script Encoding Initiative
• Scuba Educators International
• Se'i
• Segro
• Sei (album)
• Sei (film)
• Sei Andō
• Sei Ashina
• Sei Fujii
• Sei Hatsuno
• Sei Hiraizumi
• Sei Ikeno
• Sei Itō
• Sei Kawahara
• Sei Matobu
• Sei Muroya
• Sei Shōnagon
• Sei Soga
• Sei Yoshida
• Sei whale
• Seri language
• Shō Sei
• Shō Sei (r. 1803)
• Smith Enterprise
• Software Engineering Institute
• Space Exploration Initiative
• SpaceWorks Enterprises
• Spanish East Indies
• Stockholm Environment Institute
• Subjective Effect Index
• Sumitomo Electric Industries
• Sustainable Endowments Institute
• Thermal laser stimulation
• Timor
• UC Berkeley
• Weki Meki