The funding will total $1.4m (£740,000) over the next three years.
Backed festivals are:
$341,000 (£175,000) to Birds Eye View, the women-centric festival in London, Glasgow, Manchester and Newcastle which is set to expand nationally.
$341,000 (£175,000) to the Sheffield International Documentary Festival (Doc/Fest), the Sheffield-based documentary festival and market.
$292,300 (£150,000) to Cinemagic World Screen Film and Television Festival for Young People - which hopes to become a leading children's film festival by expanding from its base in Belfast to other areas in the UK.
$136,400 (£70,000) to the British Silent Film Festival, including screenings at various National Trust sites.
$136,400 (£70,000) to the Flatpack Festival - Birmingham-based festival that makes use of alternative venues and a programme aimed at younger viewers.
$97,430 (£50,000) to Deaffest, the Wolverhampton-based event for films made by the Deaf and hearing imparied
$97,430 (£50,000) to The London International Animation Festival, the animation showcase expanding to several cities.
In addition, $19,480 (£10,000) will be allocated for related activity to facilitate learning, sharing and initiative-building between festivals.
The UKFC considered more than 40 applications for the Fund's national strand.
As previoulsy reported, $3.66m (£1.88m) of the international strand of the Fund has been given to the Edinburgh International Film Festival. The remaining international festivals funding of $3.66m (£1.88m) hasn't yet been allocated.