There are five other top-30 players in the draw which is used by the players as a warm-up ahead of the opening Grand Slam of 2015.
"I think everybody coming into the year wants to start off well and I'm the same," Wozniacki told reporters.
"I just want to try to win as many matches as I can and get a good start to the year," she added.
Williams, who has had a layoff due to injury said she is ready to play in Auckland, where she was the beaten finalist last year losing in three sets to Ana Ivanovic.
Other well known players in the event are, Italy’s Sara Errani, Czech Barbora Zahlavova Strycova, two-time Grand Slam champion Svetlana Kuznetsova and Belgian Yanina Wickmayer.