Turner joins from ChildLine, where he was head of fundraising for more than two years. He left the charity after helping oversee the merger with the NSPCC in February last year.
He previously worked as director of development at the World Association of Girl Guides and Girl Scouts.
"I am very impressed with the huge impact that Interact has on changing people's lives in some of the poorest communities around the world," said Turner. "I want to use my experience abroad to tap into American donors and to raise our profile in the UK, which has dwindled in recent years."
Jewish charity Norwood has appointed Philip Bunt as director of corporate services, Stephen Richards as head of children's services and Alan Crawford as head of IT. Bunt was previously acting chief executive at the Royal Society for the Encouragement of the Arts. Richards joins from the London Borough of Havering. Crawford was previously head of information services at St Dunstan's, the charity for blind ex-service personnel.
Sir Robert Wright is the new controller of the Royal Air Force Benevolent Fund. Wright was an air marshal in the RAF until 2006. He succeeds Sir David Cousins, who retires after eight years in the role.
Karen England has taken up the post of director of fundraising at the Make-A-Wish Foundation, the support charity for children with life-threatening illnesses. She was previously founder and director of children's charity Childlife.
Emma Harrison has been made head of campaigns at the RNID. She joins from consumer rights organisation Which?, where she managed its campaign teams for seven years. Harrison previously worked at the European Parliament as a researcher on agricultural and consumer issues.
Karen Biggs is to be the new chief executive of drug and alcohol treatment charity Phoenix Futures. She joins from housing charity Stonham Home Group.
Adam Perry has joined the Community Channel as head of programmes and campaigns. He was previously creative director at television production company World of Wonder.
Tony Aston has been elected chairman of the Guide Dogs for the Blind Association. He was previously chair of the European Blind Union Commission on the Rights of Blind and Partially Sighted People and the World Blind Union Working Group on the United Nations. He succeeds Barry Weatherill, who retires at the end of February.
Mike Long is the new chair of Impact Initiatives, the health, independence and learning charity for people living in Sussex. The retired solicitor succeeds Andy Durr, who steps down as chair after four years.
Lord Levy, Labour's chief fundraiser, has been appointed president of the Jewish Lads' & Girls' Brigade. Levy is also president of Jewish Care, the Specialist Schools and Academies Trust and CSV.