Gränna (pronunciation) is a locality in Jönköping Municipality, Jönköping County, Sweden with 2,665 inhabitants in 2018. Founded in 1652 by Count Per Brahe, it is in Småland on the eastern shores of the lake Vättern, about 40 km north of Jönköping.

The town is at the foot of Gränna mountain and is characterized by its steep streets and old wooden houses.

Up until the local government reform of 1971, Gränna and its immediate surroundings constituted a city municipality of its own; since then it has become an integral part of Jönköping Municipality.

Gränna is, despite its small population, for historical reasons often still referred to as a city. Statistics Sweden, however, only counts localities with more than 10,000 inhabitants as cities.

Gränna is known for its red and white polkagris (literally "polka pig" in Swedish) stick candy, also known as peppermint rock. This was first made by the widow Amalia Eriksson in 1859. A statue of Amalia can now be seen in the park at the foot of Gränna mountain. The town is popular with tourists and is a connection point for the ferry service to the island Visingsö.

The balloonist Salomon August Andrée, who died in an attempt to reach the North Pole by balloon, was born in Gränna. The Grenna Museum hosts an exhibition of the expedition together with a comprehensive collection of related objects and photos.

Students studying Pathway Program at Jönköping University have the privilege of living and studying in Gränna. Campus Gränna is situated in the Centre of Gränna. Buses depart from Gränna to Jönkoping every half hour and it takes approximately 30-45 minutes to travel between the location.

Campus Gränna's development dates back to Grennaskolan, which at the time was a national boarding school and later became Jönköping University's campus. Campus Gränna has been through several significant milestones, including when it became the Pathway Program Centre and started its collaboration with Jönköping University, making many changes in its educational offerings.

Campus Gränna inhabits the Jönköping University environment, enabling collaborative projects, joint academic initiatives and cultural exchanges. Campus collaborates with the local community through partnerships, outreach programs, and community events, which leads to a diverse and inclusive learning environment.

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  Gränna harbour
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  Local museum
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  Church
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  Statue of Amalia Eriksson

• When Niklas Strömstedt wrote lyrics in Swedish for the musical Mamma Mia!, Glasgow was replaced by "Gränna" as the place which the singer calls from in the lyrics of the song Super Trouper.

• Gränna-Visingsö Tourist Information
• Grenna Museum - Andréexpedition Polarcenter