The pair will take on the roles of Cameron and Campbell respectively.
Davies (9 to 5 The Musical) said: “I’m over the moon to be a part of this.”
Smith (Rip It Up The 70s) added: “Bring It On combines everything I’m about: Gymnastics, music and dance. I’m buzzing to be involved.”
Further casting for the tour - the first in the UK - is to be confirmed.
Inspired by the film of the same name, Bring It On The Musical follows cheer-royalty and newly crowned Squad Captain, Campbell, who should be embarking on her most cheertastic senior year at Truman High School.
When she’s forced to move to the neighbouring hard-knock Jackson High, Campbell fears her life is over but an unlikely friendship catapults Campbell back into contention with a powerhouse squad and the fire to achieve the impossible.
The musical features a book by Jeff Whitty with music by To Kitt and Lin-Manuel Miranda and lyrics by Miranda and Amanda Green.
Bring It On's 2020 UK tour will open in Birmingham in June before moving to Sunderland, Milton Keynes, Cardiff, Stoke, Hull, Bradford, Manchester, Dublin, Peterborough, Malvern and Edinburgh.
PICTURE CREDIT: Twitter/@bringitonuktour