The 'What About Us' singer will be the presenter of Una's Dream Ticket on Irish network RTE.
On the show, the 31-year-old will be waving her magic wand to make children's dreams come true.
Speaking to The Sun about her latest career move, Una said that her new job will be a "really good experience" but assured fans that her music comes first.
She said: "All of us girls have enough experience now that we can go off and work on other projects, but our main focus is the band."
Una is following in the footsteps of bandmate Rochelle Humes, who landed her dream presenting gig in July when she co-hosted ITV's This Morning with husband Marvin.
And Una, who is mother to one-year-old Aoife Belle, also told the newspaper that she wouldn't rule out more presenting in the near future!
The girl band's new single, 'Disco Love' is due for release on 6 October, which will be taken from their forthcoming studio album, Living For The Weekend.
Watch The Saturdays' video for 'Disco Love' below: