Topas may refer to:

• Topas, Salamanca, a municipality located in the province of Salamanca, Castile and León, Spain
• Tópas, a confection produced by the Icelandic company Nói Síríus
• Topas (magician), German magician and comedian
• OT-62 TOPAS, a Polish/Czechoslovakian series of amphibious tracked armoured personnel carriers
• An apprentice in a lascar ship's crew
• TOPAS, a software package used in the analysis of powder diffraction data
• Topass, a Portuguese ethnicity in the Indian Ocean