Families Need Fathers - Both Parents Matter (FNF), founded in 1974, is a registered charitable social care organization in the United Kingdom that offers information, advice, and support to parents whose children's relationship with them is under threat during or after divorce or separation, or who have been alienated or estranged from their children.

[3] The majority of the charity's work is to provide relief, assistance, guidance and support to parents and other close family members hoping to stay in touch with their children after divorce or separation.

[4][5][6][7] In 2008, FNF launched projects under the slogan "Both Parents Matter" and this strapline was added to the charity's logo in 2013.

[12] On October 12th, 2024, the members of Families Need Fathers voted 91% in favour of the Special Resolution to change the charity's name to "Both Parents Matter" In 2016, Families Need Fathers received around 25,000 calls to its Helpline, around 5,000 visitors to local meetings, and 185,000 unique page views to its website.

They base their advocacy on scientific studies showing that shared parenting is in the best interest of children, citing research by Malin Bergström, Robert Bauserman, Richard Layard, Judith Dunn, Rebekah Levine Coley and Bethany L. Medeiros, among others.