The week, supported by the Big Lottery Fund, runs from 25 July to 3 August.
Organisers say at a time when local authorities are facing tough budget decisions and services are being stretched, often parks are overlooked when compared to other local services deemed more critical.
"However, there is a wealth of evidence demonstrating how local parks offer cheap ways of staying fit and healthy, whilst also offering a boost to local house prices and businesses."
They cite last month's State of UK Parks report as evidence of the plight of parks.Keep Britiain Tidy say Love Parks Week "is an opportunity to reflect on the fact that our parks will only survive if local communities demonstrate how much they value them and get involved.
London Legacy Development Corporation chief executive Dennis Hone said: "As London’s newest park we understand the nation’s love affair with parks. Since we opened in April more than 800,000 visitors have enjoyed our wide open spaces, beautiful parklands and children’s playgrounds - that’s why we are delighted to be launching Love Park Week at Queen Elizabeth Olympic Park.
"Our park is at the heart of the regeneration of east London and is central in helping improve the health and well-being of the local communities."
Keep Britain Tidy’s Love Parks manager Paul Todd said: "Love Parks Week is the ultimate celebration of our beautiful parks and green space and it is fantastic that Queen Elizabeth Olympic Park is getting involved in this year’s event.
"Green spaces are absolutely vital to every community and make a massive contribution to people’s health. In this time of budget cuts, it is essential that everybody uses and values their local green space, otherwise we could all be in danger of losing them.
"We want this year’s event to be the biggest and best celebration yet, so we are urging everyone to get down to their local green space and take part in the festivities.