Kraftwerk and DJ Bone have already been announced for the three-day party.
Neopop Festival has revealed the final names for its 2017 lineup.
Joining the likes of Kraftwerk, Helena Hauff and DJ Bone in Portugal this year are Danny Tenaglia and Avalon Emerson b2b Courtesy, with live shows from Octave One and The Field also announced.
Maceo Plex, Loco Dice, Paco Osuna, Chris Liebing, Jane Fitz and Screca are also booked to play the summertime festival, which takes place August 3-5 in the northern Portuguese coastal city of Viana do Castelo.
For more lineup info and tickets visit the Neopop site.