CSKA Sofia fans stormed the pitch during their match against CSKA 1948 on Sunday as both sides battled it out for a place in the Europa Conference League.
Fans of Viktoria Plzen and Sparta Prague clashed on the pitch at the end of the Czech Cup final on Wednesday.
Athletic Bilbao and Mallorca fans clashed in Seville ahead of their Spanish Cup final at the La Cartuja stadium on Saturday.
Hajduk Split fans rioted after the side’s 1-0 defeat to rivals Dinamo Zagreb in a Croatian Cup semi-final match on Wednesday.
Trouble flared during an Argentinian cup tie between Godoy Cruz and San Martin San Juan on Monday as both sets of fans threw seats at each other and clashed with riot police.
Fans of Brusque and Avai fought on the pitch at half-time of their regional league match in the southern Brazilian city of Joinville on Wednesday.
Catania fans caused trouble during the first leg of their Serie C Italian Cup final against Padova at the Euganeo stadium on Tuesday.
Trabzonspor fans stormed the pitch and attacked Fenerbahce players after their team lost 3-2 on Sunday.
Rival fans clashed on the pitch before a Romanian league match between Dinamo Bucharest and UTA Arad at the Triumphal Arch Stadium on Friday.
Atalanta and Rangers fans clashed in Lisbon on Wednesday night, with the two teams in Portugal for Europa League matches.
Babelsberg hooligans attacked their Zwickau rivals at the Karl Liebknecht Stadium before the kick-off of their German fourth division match on Tuesday.
Colo-Colo fans clashed with riot police and set fire to seats inside the National Stadium in Santiago during the Chilean Super Cup final against Huachipato on Sunday.