Emperor Theodore (or Fedor, Theodoros, et cetera) may refer to:

• Feodor I of Russia, son of Ivan the Terrible
• Feodor II of Russia, son of Boris Godunov
• Feodor III of Russia, older brother of Peter the Great
• Theodore I Laskaris, a Byzantine emperor
• Theodore II Laskaris, a Byzantine emperor
• Tewodros I of Ethiopia
• Tewodros II of Ethiopia

• Soft rot (wood decay)
• Soft Samba
• Soft Samba Strings
• Soft (SCIRP journal)
• Soft sculptures
• Softseating
• Soft-sector
• Soft sector
• Soft-sectored
• Soft-sectoring
• Soft sectoring
• Soft sell magazine
• Soft Serve (album)
• Soft shackle
• Soft-shelled turtles
• Soft-shell turtle
• Soft Shield-fern
• Soft Shock
• Soft-shoe
• Soft-skinned
• Soft solder
• Soft Sounds from Another Planet
• Soft Sounds From Another Planet (album)
• Soft-spined gecko
• Soft spiny-tailed gecko