Wendy Petrie is a presenter (since January 2006) of Television New Zealand's One News (with co-presenter Simon Dallow) at 6pm.

She replaced Judy Bailey as the primary female anchor, who had held the position for 18 years, after Judy left some time after changes to the presenter format of the 6pm bulletin meant one anchor doing the whole bulletin. That decision was reversed and put back to two presenters after Bailey left (mainly due to a fall out with TVNZ over her treatment publicly, regarding her pay). Prior to this, Wendy had been at TVNZ for two years as the "swing" presenter for all the One News bulletins.

Previously, Petrie was the weekend presenter for 3 News before going to Canada to become a newsreader for CTV News Channel as well as a substitute newsreader on the CTV morning programme Canada AM. She stayed there for three years before returning to New Zealand to start with TVNZ.

During her time in Canada, she made guest appearances on the nationally-syndicated Travel World Radio Show, hosted by veteran travel broadcasters Stephen Pickford and Willem Bagchus, in which she discussed and promoted her home country of New Zealand.