Maps revealed yesterday (June 10) that Mr Govett had resigned from his role due to "an impending family relocation".
Mr Govett was announced as chief executive of Maps in July 2018, officially taking up the role in October.
Caroline Siarkiewicz, currently partnerships and commissioning director at Maps, has been appointed as an interim chief executive, effective from June 14, while the body conducts a search process for a permanent appointment.
The role will be open to both internal and external candidates and recruitment will commence "very shortly".
Maps, which was made up of the merger of Pension Wise, the Money Advice Service and The Pension Advisory Service, officially launched in April 2019 and is a joined-up service for everything guidance, from debt help to money and pensions guidance.
Sir Hector Saints, chairman of Maps, said: "I would like to thank John for his huge personal effort to help bring together our three legacy organisations into one new one.
"We have made excellent progress under John and we are well set for the future as a result. I will be personally sorry to see him leave us.
"We respect John’s decision to resign for personal reasons and wish him well with his family move, and his future career."
Speaking about his resignation, Mr Govett said: "I’ve been engaged in the Maps project for around a year now and I’m so proud of the positive position the organisation has reached, enabling me to leave everything in a good position.
"I have enjoyed immensely working with Sir Hector, and now feels like the right time to hand over the baton to a future CEO who can make the long-term commitment necessary to deliver the national strategy that my relocation prevents me from doing."
Maps is responsible for building the first pension dashboard.
Last week (June 3), Maps appointed Chris Curry, current director of the Pensions Policy Institute, as principal of the pensions dashboard industry delivery group.
Mr Curry will take up the role on July 8 on a two days per week basis set on a two-year fixed contract.
Maps is still recruiting for an implementation director, who will report to the principal.
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