Bollier is a surname. Notable people with the surname include:

• André Bollier (1920–1944), French member of the French Resistance during WWII
• Barbara Bollier (born 1958), American politician
• Bobby Bollier (born 1989), American swimmer
• David Bollier, American activist, writer, and policy strategist
• Edwin Bollier, Swiss businessman

• Holy Trinity Catholic High School, Edmonton
• Holy Trinity Catholic High School (Fort McMurray)
• Holy Trinity Catholic School
• Holy Trinity Catholic Secondary School (Cornwall, Ontario)
• Holy Trinity Chapel, New York University
• Holy Trinity Church, Aleppo
• Holy Trinity Church, Bacchus Marsh
• Holy Trinity Church, Balsham
• Holy Trinity Church, Bangalore
• Holy Trinity Church, Bembridge
• Holy Trinity Church (Berat)
• Holy Trinity Church, Berlin
• Holy Trinity Church, Bickerton
• Holy Trinity Church, Blackburn
• Holy Trinity Church, Blackpool
• Holy Trinity Church, Blatherwycke
• Holy Trinity Church, Bolarum
• Holy Trinity Church, Bollarum
• Holy Trinity Church, Brighton
• Holy Trinity Church, Cambridge
• Holy Trinity Church (Cambridge)
• Holy Trinity Church, Capenhurst
• Holy Trinity Church (Central Falls, Rhode Island)
• Holy Trinity Church, Chester
• Holy Trinity Church, Cincinnati, Ohio