Spanish football will pay tribute to those killed and injured in the attacks in the country's Catalonia region as the new season starts this weekend.
Fourteen people died and more than 100 were hurt as a result of Thursday's attacks in Barcelona and Cambrils.
All 10 opening La Liga matches will take place, including Barcelona's home match against Real Betis on Sunday.
Barcelona will wear black armbands at the Nou Camp, while a minute's silence will be held before all games.
"FC Barcelona wants to express its profound sorrow and utter disgust at the terrorist attack that has hit the heart of our city," the club said.
La Liga's Primera Division started on Friday when Leganes won 1-0 against visitors Alaves, before Valencia's 1-0 home victory over 10-man Las Palmas.
Leganes and Alaves players came together before kick-off to show a banner condemning the attacks in Barcelona.
The French and German leagues will also hold a minute's silence before all games this weekend.