Manchester City have been fined 15,750 euros (£13,644) by Uefa for the “throwing of objects” by their fans during the 2-0 Champions League win over Dinamo Zagreb on 1 October.
Zagreb have been fined 20,000 euros (£17,326) for the same offence and “acts of damages” at Etihad Stadium.
The Croat club have also been banned from selling tickets to their away fans for their next European match.
Liverpool have been fined 10,000 euros (£8,663) after a pitch invasion.
Fans ran on to the pitch after their 4-3 Champions League win against Red Bull Salzburg on 2 October.
Salzburg have been fined 3,250 euros (£2,815) for the throwing of objects by their supporters during the game at Anfield.
Elsewhere, Ajax have been fined 50,000 euros (£43,315) for the “acts of damages and crowd disturbances” during the club’s 3-0 win against Valencia.