Does Qantas business class get lounge access?

Yes, Qantas business class has complimentary lounge access. However, the lounges are limited to certain airports only. Moreover, certain other ways through which one can get access to Qantas lounges include one need to be a member of Qantas platinum or gold frequent flyer, first-class passenger, and others. To get more details on other services of Qantas Airways business class, visit its official website or through the blog linked above.