TD or td may stand for:

• Chad, ISO country code
• tank destroyer
• Teachta Dála (TD), Member of lower house of Irish Parliament, Dáil Éireann
• Territorial Decoration, awarded for twelve years' service in the British Territorial Army
• touchdown
• Toronto-Dominion Bank and TD Bank Financial Group
• Tower Defense
• tracking dog
• trust deed
• turbo diesel
• departments
  • Treasury Department
  • Transport Department