Trinity House may refer to:

Nautical authority agencies

• Trinity House, a UK private corporation governed under a Royal Charter, functions include the official Lighthouse Authority
• Trinity House of Leith
• Trinity House Pilot Station, a former Port Tower in Folkestone Harbour
• Newcastle-upon-Tyne Trinity House
• Hull Trinity House
  • Hull Trinity House Academy, an associated marine training school
• Trinity House, Scarborough, original building for the society of Ship Owners and Master Mariners.

Architecture

• Trinity house (Philadelphia)

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