The 89-strong list, formerly undisclosed but revealed to European diplomats on Thursday, includes past and serving parliamentarians and ministers who have been outspoken critics of President Vladimir Putin and the war in Ukraine.
"Being on this list does not change my commitment to the people of Ukraine," said Swedish MEP Anna Maria Corazza Bildt in a tweet.
"I have more to be proud of than to be afraid of!... Putin's list is a confirmation that I am doing right as a parliamentarian," the centre-right politician, married to Sweden's former foreign minister Carl Bildt, added.
"When I saw the other names (on the list), I found out I was in a very decent club. I consider this a reward," he was quoted as saying by news agency CTK.
Other names have since been made public including Guy Verhofstadt, head of the Liberal group in the European Parliament and a former Belgian PM, and Sweden's former centre-right culture minister Lena Adelsohn Liljeroth.
According to German daily Bild seven German nationals have been targeted including Michael Fuchs, vice-president of the national parliament's conservative CDU-CSU group and former MEP Daniel Cohn-Bendit.
"At a time when we are trying to defuse a bitter and dangerous conflict in the heart of Europe, this does not help," German Foreign Minister Frank-Walter Steinmeier said in a statement during a visit to Ukraine.
Polish media reports suggest that as many as 18 Poles have been targeted, including Deputy Minister of National Defence Robert Kupiecki and the Senate Speaker Bogdan Borusewicz.
Borusewicz is a key communist-era dissident who was denied entry to Russia in March to attend the funeral of outspoken opposition activist Boris Nemtsov who was shot dead in central Moscow.
He said yesterday that he would let "Moscow know... In no uncertain terms" that the Netherlands rejected it as the bans were "not based on international law".
"It is very striking behaviour which unfortunately does not improve Russia's image and we have asked for a clarification for this conduct," Swedish Foreign Minister Margot Wallstroem told news agency TT yesterday.
