Public Transportation is available on Bar Harbor. There is an Island Explorer Shuttle Bus system that provides free rides. This transportation system is propane-powered because the National Park Service which runs the service is concerned about the environmental impact of gasoline or diesel fueled vehicles. They believe that propane-powered shuttles are the only safe way to prevent fumes from endangering the nature and beauty in Acadia National Park. 

The Island Explorer Shuttle Bus has many routes and can take passengers all over Acadia National Park, hotels in the area and locations where people camp. The busses can also take people to many of the hiking trails in the area, to the beach, and to shopping areas in Bar Harbor. Even though shuttle rides are free, when it is taken into the Park, there is a fee that every passenger on the shuttle must pay.

Cadillac Joe's Island Transportation, LLC is a high quality transportation service with runs to/from Bar Harbor, Trenton, Ellsworth, and Bangor. With stops at Cadillac Mountain, Bangor Int'l airport, and Hollywood Casino in Bangor. Plus all of the Hotels, Motels, Cabins, and Campsites in between. Cadillac Joe's also provides high quality guided tours of the area. They even have trips to and from the Gentleman's Club. 

Oli’s Trolley is a mode of transportation for visitors to take for a unique tour of Acadia National Park and Bar Harbor. Some of the tours last only one hour, and others are longer. In July and August, there are several one-hour tours available throughout the day. From May through October, there are two and a half hour tours available twice a day. The trolley rides are fun and great for adults and children alike.

At Your Service Taxi and Tours Bar Harbor's and Mount Desert Island's oldest and largest taxi company. Company goal is to provide  the best island experience available by providing distinct and personalized services targeted to your specific needs. Operates 24 hours a day, seven days a week, year-round. Accepts all major credit cards and reservations. All drivers have undergone a complete screening process, have clean driving records, and are free of any criminal history. All vehicles are smoke-free.  Vans, sedans, and 14 passengers vehicles available. Child seats can be provided.  Custom tours available.  Private summer accounts available upon request.

Bar Harbor Shuttle , LLC provides transporatation service to and from Bar Harbor at an affordable price. Be dropped off and picked up at the door. Door to door service provided from Hotels, Airports and Bus Depots. You do not need a car in Bar Harbor. Help is provided on how easy it is to vacation here the home of Acadia National Park. Bar Harbor Shuttle offers several daily trips. Shuttles are equipped for single travelors, groups, families and those who may be attending a conference.  

Bar Harbor Coastal Cab & Tours  is a  family owned and operated taxi service based in Bar Harbor, Maine.  They offer dependable transportation services at competitive prices.  Transportation for folks traveling between Bangor and Bar Harbor is a common service they provide year round.  You can call or email to reserve taxi service to and/or from Bangor International Airport, Bar Harbor/Hancock County Airport, Concord Bus Terminal, Greyhound Bus Terminal, Bar Harbor and many other coastal destinations.  For a great orientation to the area, Bar Harbor Coastal Cab & Tours offers critically acclaimed narrated historical excursions of Acadia National Park, Bar Harbor & Coastal MaineExcellent reviews on tripadvisor.