Thir may refer to:

• Thir (band), a US band
• Thír, wife of Þræll, the ancestress of serfs in the Eddic poem Rígsþula
• Thir Pasha, commonly known as Tahir Pasha (Egypt), a commander of Albanian bashi-bazouks and acting Ottoman Governor of Egypt in 1803

• Horr (disambiguation)
• Horrelvoet sillago
• Horrenbach-Buchen
• Horrenbach Buchen
• Horrenbach-Buchen BE
• Horrenbach-Buchen (Bern)
• Horrenbach-Buchen (Berne)
• Horrenbach-Buchen, Switzerland
• Horreo
• Horrible Gelatinous Blob
• Horrible Geography
• Horrible Hair
• Horrible Harry
• Horrible harry
• Horridus (comics)
• Horrie Clover
• Horrie Miller
• Horrie Miller (aviator)
• Horrie Miller (Rugby)
• Horrie Miller (rugby league)
• Horrie the Wog Dog
• Horrified
• Horringford (Isleof Wight) railway station
• Horringford railway station
• Horrington