Infrastructure bodies Small Charities Coalition and Charity Trustee Networks have merged.
The newly-merged charity will be called Small Charities Coalition (SCC), and be led by SCC's current chief executive Cath Lee.
Karen Heenan, chief executive of Charity Trustee Networks (CTN) will become director of CTN at the new organisation.
Heenan said she expected no redundancies as a result of the merger.
SCC (t/o £128,725) and CTN (t/o £121,348) have worked collaboratively in the past and recently submitted a joint bid to become an Office for Civil Society strategic partner.