Lytham Festival co-founder Peter Taylor said: “Everyone we are announcing is an absolute music icon and we can’t wait to welcome them to Lytham.
“Alanis Morissette is quite simply a cultural phenomenon and an artist with incredible integrity and acclaim who is celebrated globally.
“To then have the huge superstar that is Justin Timberlake headlining the following night is a booking we are very excited about, and one we are confident will be a huge hit.”
He said the “brilliant double-headlining set” of Simple Minds and Texas “will be very popular with our Lytham audience”.
Past headliners of Lytham Festival include Shania Twain, Lionel Ritchie, Kylie Minogue and Diana Ross, as well as Sting and Lewis Capaldi.