Fredericks, an IOC member since 2012 and four-times Olympic silver medallist, will lead the 14-member commission tasked with evaluating the four bids from Los Angeles, Budapest, Rome and Paris ahead of the vote in 2017.
The evaluation commission will stage working visits to each of the four cities in early 2017 to review bid plans before delivering a final report to the Olympic body ahead of the decision at its session in Lima, Peru in September.
The IOC also said it had appointed Russian Olympic Committee chief Alexander Zhukov as head of the coordination commission overseeing the delivery of the 2022 winter Olympics in Beijing.
Zhukov was head of the evaluation commission of the 2022 bids with Beijing getting the nod in August last year.
He was also chairman of the supervisory board for the 2014 Sochi winter Olympics.
(Reporting by Karolos Grohmann, editing by Ed Osmond)
