The deaths occurred during bull-running in the streets, not in bullrings. It is an unusually high number of fatalities for such a short period.
Among them was a 36-year-old town councillor gored in Penafiel, a town near Valladolid, north of Madrid.
Further north an 18-year-old man gored in the stomach died in Lerin, Navarra.
The other deaths occurred during bull festivals in the regions of Valencia, Murcia, Toledo, Castellon and Alicante.
Opponents condemn bullfighting as barbaric, but it still has many fans in Spain, including Prime Minister Mariano Rajoy.
According to Spanish economics lecturer Juan Medina at the University of Extremadura, bullfighting generated €282.4m (£200m; $313m) in 2013, of which €59m was income from sales tax (VAT).