Sparda-Bank Baden-Württemberg has been a premium sponsor of the festival since 2011.

In addition to the German Jazz Trophy, which has been the jazzopen's kick-off event since 2013, the SpardaWelt Eventcenter has become a popular venue for jazz fans at the jazzopen.

Since 2017, jazzopen Mastercard has been one of the premium sponsors. With Mastercard, the jazzopen has been a cashless festival since 2022.

For more than 10 years, jazzopen has had Allianz at its side as the festival's insurer and premium sponsor.

STIHL joined as a sponsor in 2016 and became a premium sponsor in 2023. Together with the organiser, STIHL will implement attractive offers for the visitors.

DATAGROUP SE has been part of the jazzopen sponsor family since 2013. The company is the IT partner of the festival.

Having been a partner for some time, Forvis Mazars became a sponsor in 2024. The auditing and consulting firm is active in over 100 countries and regions around the world and, like the music festival, has close ties to the Stuttgart region.

Friedrich Scharr KG has been one of the jazzopen sponsors since 2013. The company makes the festival climate neutral by offsetting the CO2 emissions of the jazzopen through an international Scharr climate protection project in Dafur in Sudan.

First as a partner of the jazzopen, the jazzopen welcomed BF.direkt AG 2023 as a sponsor of the festival. Like the jazzopen, the specialist for financing residential and commercial real estate projects is firmly rooted in Stuttgart.

The globally active cable company LAPP has been a sponsor of the jazzopen since 2023. The connectivity partner of the jazzopen helps to provide the approximately 13 kilometres of cable on the eight stages of the jazzopen.

The latest member of the jazzopen sponsors is the high-tech company TRUMPF. The company stands for quality work from Baden-Württemberg worldwide and has been closely associated with the jazzopen for years.