Cult
Wenger, producer of ITV's Bafta-award winning drama Housewife, 49, will also become the new head of BBC Wales drama from January 2009. He will join the BBC in the new year, working closely with Gardner in a 12-month handover period.
Russell T Davies, co-executive producer of Who, is on board for three specials airing in 2009 but has refused to confirm whether he will be involved with the fifth series, due for broadcast in 2010. Gardner is expected to remain at the BBC.
"I'm incredibly excited to be joining BBC Wales," said Wenger. "The success of the drama team there has been extraordinary and I look forward to taking the team to even greater heights."
Gardner added: "I know that when I hand over my sonic screwdriver to Piers for season five of Doctor Who, it will be to someone who loves and understands the show."
More: Cult, Doctor Who
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