Myna Mahila Foundation is among seven charities hand-picked by the couple as they announced that anyone who might wish to mark their wedding day on May 19 should consider making a donation to one of the charities, rather than sending a wedding gift.
The foundation, which aims to offer Mumbai women stable employment close to their homes as well as breaking taboos around menstrual hygiene by offering them access to low-cost sanitary napkins, was chosen by Ms Markle after she saw its work "first-hand" during a visit to India last year, Kensington Palace said.
"Myna Mahila Foundation is delighted to be a part of this special occasion for Ms Meghan Markle and Prince Harry. This support will enable us to expand our reach into more urban slums in Mumbai, empowering local women through access to menstrual hygiene products and employment opportunities," said Suhani Jalota, who founded the charity in 2015.
The foundation works as a "trusted network" in Mumbai's urban slums, empowering its staff through training in women's health, English, Maths, and life skills such as self-defence.
The sanitary products are manufactured and distributed by women from these communities as part of wider professional and personal support to help them "grow as individuals and businesswomen".
Ms Markle had written about the charity in 'Time' magazine after her visit to Mumbai in March, 2017.
"During my time in the slum communities outside of Mumbai, I shadowed women who are part of a microfinance system where they manufacture sanitary napkins and sell them within the community," the American actress wrote.
Kensington Palace said Harry and Markle do not have any formal relationships with the charities chosen.
"The couple have chosen charities which represent a range of issues that they are passionate about, including sport for social change, women's empowerment, conservation, the environment, homelessness, HIV and the armed forces. Many of these are small charities, and the couple are pleased to be able to amplify and shine a light on their work," the palace statement said.
The other charities chosen include the Children's HIV Association (CHIVA), which supports children growing up with HIV and their families across the UK and Ireland, Crisis - the UK's national charity for homeless people, Scotty's Little Soldiers - a charity for bereaved Armed Forces children, StreetGames, which uses sport to change lives across Britain, Surfers Against Sewage - a UK-based marine conservation and campaigning charity, and the Wilderness Foundation UK, which promotes the benefits and enjoyment of wild nature.
"Prince Harry and Ms Meghan Markle are incredibly grateful for the goodwill shown to them since the announcement of their engagement and are keen that as many people as possible benefit from this generosity of spirit. The couple have therefore asked that anyone who might wish to mark the occasion considers making a donation to charity, rather than sending a wedding gift," the palace statement said.
Harry, 33, fifth-in-line to the British throne, and Markle, 36, are set to get married in a ceremony at St George's Chapel at Windsor Castle on May 19.
They had earlier revealed that their wedding flowers will also be given to different charities after the occasion.
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