The grant of £390,755 will fund IoF Cymru’s Fundraising Health Checks and Executive Coaching project, due to begin in June.
The project will work with 35 small and medium-sized Welsh charities each year over a three-year period to help them review their fundraising practices.
Charities that want to take part in the project are likely to be able to apply in April.
In a statement announcing the grant, IoF Cymru said it hoped the project would allow charities to develop a sustainable fundraising strategy and increase their income.
Martin Price, chair of IoF Cymru, said: "Fundraising is one of the most effective and sustainable ways for charities to raise the money they need to continue their amazing work.
"In Wales, charities often lack the support and expertise to build the skills needed to undertake fundraising activity. Our successful networks in south, north and west Wales go some way to mitigating the issues of isolation, but we feel we can build on this with this project. We are very happy that the Big Lottery Fund recognises the need for bespoke fundraising support for smaller charities."
The funding was awarded as part of BLF’s £4m third sector skills initiative, which is designed to empower third sector organisations to become better equipped to plan for the future and deal with economic difficulties.
If you’re interested in fundraising, you can’t miss Third Sector’s Annual Fundraising Conference on 23 and 24 May. Click here for more information and to book at the Early Bird rate.