Rth or RTH may refer to:
Business Regular trading hours ICAO symbol for Artis (airline) Exchange symbol for VanEck Vectors Retail, an exchange-traded fund
Media Radio y Televisión de Hidalgo, Mexico
Other uses Equivalent resistance (Rth) in Thévenin's theorem Resistance to Thyroid Hormone Book of Ruth Rotterdam The Hague Airport Rhyncattleanthe (Rth.), an orchid nothogenus Red-tailed hawk