Steaua, Debrecen, NK Maribor & Chikhura Sachkhere punished
Romanian giants Steaua Bucharest are one of four clubs ordered by Uefa to close part of their stadium following racist behaviour from supporters.
Football's European governing body has also sanctioned Hungary's Debrecen, FC Chikhura Sachkhere of Georgia and Slovenian club NK Maribor.
The incidents all took place in Champions League and Europa League games last month.
"The fight against racism is a high priority for Uefa," a spokesman said.
The punishments will take effect in the next home European tie played by those clubs.