The Swede finished second in the King of the Mountains classification at the Tour de France and will be assisted in the mountains by Paolo Tiralongo who won the prestigious Recanati-Rocca di Cambio stage at the Giro d’Italia this year.
Also in the team's line-up is Enrico Gasparotto who was victorious in the Amstel Gold Race this year and Kazakh national champion Assan Bazayev.
“There are a lot of contenders for victory at the Vuelta, but we are up there with them," said team manager Giuseppe Martinelli.
"After his good results at the Tour, here Fredrik Kessiakoff will be able to call on the top-class support of Paolo Tiralongo to try and do even better.
"Then there is Enrico Gasparotto, who will not only be giving it his best for us, but also for a call-up to the national team in the World Championships.
"Basically, we’ve got all the boxes ticked so there is nothing left to do but to give it everything we've got and try to finish the season in style.”
Astana team for the Vuelta
1. Fredrik Kessiakoff
3. Assan Bazayev
4. Alexandr Dyachenko
5. Enrico Gasparotto
6. Kevin Seeldraeyers
7. Egor Silin
8. Paolo Tiralongo
9. Andrey Zeits