The announcement, made by sports minister Do Jong-hwan, is the latest in a series of olive branches waved by Seoul's new administration created to thaw relations with Kim Jong-un's regime north of the border.
Do also proposed that the two countries form a women's ice hockey team to participate in the games.
Asked by reporters whether the North has an intention to field a unified women's ice hockey team with the South for the Pyeongchang Games, Chang said he is not in the position to speak for the North Korean government, noting he has visited the South as an International Olympic Committee representative from the North.
What Pyongyang thinks of the proposals is not yet clear.
Do plans to discuss the matter with Jang and IOC President Thomas Bach, both of whom are scheduled to visit South Korea later this month to attend the closing ceremony of an worldwide Taekwondo competition.
The Olympic rings outside the Gangneung Hockey Centre in Gangneung, South Korea. He also stated he believed that North Korea's Masikryong Ski Resort has the potential to be a fantastic Olympic venue.
The United States will send around 245 athletes to compete.
But further talks must be held with the International Olympic Committee because North Korean athletes have not yet qualified for the winter games, he added.
However, an attempt to reach an agreement on co-hosting the 1988 Olympics, held in Seoul, broke down and North Korea ended up boycotting the games.
Majority of Koreans are positive that the PyeongChang Olympics will be successful.
Despite Moon's public statements that he wants to improve relations with North Korea, Pyongyang has ramped up missile testing and continued its aggressive rhetoric towards its southern neighbor and the US.
Currently, North Korea have not qualified any athletes for the Games, with pairs figure skating representing their only hope.
Taeyang joins a list of ambassadors from the worlds of sport and entertainment to promote the Games that run from February 9-25.