https://www.jazzopen.com/

The Newport Jazz Festival is a music festival held every summer in Newport, Rhode Island. Elaine Lorillard established the festival in 1954, and she and husband Louis Lorillard financed it for many years. They hired George Wein to organize the first festival and bring jazz to Rhode Island.^[1][2]

Newport Jazz Festival
McCoy Tyner and Ravi Coltrane perform at the Newport Jazz Festival on August 13, 2005.
Genre	Jazz, rock, pop
Dates	August
Location(s)	Newport, Rhode Island
Years active	1954–present
Founded by	George Wein, Elaine Lorillard
Website	newportjazzfest.org.com

Most of the early festivals were broadcast on Voice of America radio, and many performances were recorded and released as albums. In 1972, the Newport Jazz Festival was moved to New York City. In 1981, it became a two-site festival when it was returned to Newport while continuing in New York. From 1984 to 2008, the festival was known as the JVC Jazz Festival; however, during the economic downturn of 2009, JVC ceased its support of the festival and was replaced by CareFusion.^[3] As of 2012, the festival is sponsored by Natixis Global Asset Management .^[4]

The festival is hosted in Newport at Fort Adams State Park. It is often held in the same month as the Newport Folk Festival.

https://en.wikipedia.org/wiki/Newport_Jazz_Festival

The Montreux Jazz Festival (formerly Festival de Jazz Montreux and Festival International de Jazz Montreux) is a music festival in Switzerland, held annually in early July in Montreux on the Lake Geneva shoreline. It is the second largest annual jazz festival in the world after Canada’s Montreal International Jazz Festival.

https://en.wikipedia.org/wiki/Montreux_Jazz_Festival

The North Sea Jazz Festival is an annual festival held each second weekend of July in the Netherlands at the Ahoy venue. It used to be in The Hague but since 2006 it has been held in Rotterdam. This is because the Statenhal where the festival was held before was demolished in 2006. As of 3 November 2017 the festival officially will be known as the NN North Sea Jazz Festival.

https://en.wikipedia.org/wiki/North_Sea_Jazz_Festival

Jakarta International Java Jazz Festival (JJF) is one of the largest jazz festivals in the world and arguably the biggest in the Southern Hemisphere, held in Jakarta, Indonesia. The annual jazz festival is held every early March and was designed to be one of the largest jazz festivals globally. It was held for the first time in 2005, when approximately 125 groups and 1,405 artists performed in 146 shows. The first festival was attended by 47,500 visitors during its three-day stretch. The festival, which is also known as Java Jazz, was founded by Indonesian businessman Peter F. Gontha.

https://en.wikipedia.org/wiki/Jakarta_International_Java_Jazz_Festival

https://en.wikipedia.org/wiki/Internationale_Jazzwoche_Burghausen

https://en.wikipedia.org/wiki/Jazztage_Dresden

https://en.wikipedia.org/wiki/Leverkusener_Jazztage