Under house arrest when the Sakharov Prize for Freedom of Thought was awarded to her in 1990, Suu Kyi finally was presented with the award in a ceremony at the European Parliament, Euronews reported.
She was under house arrest for 15 years before her release in 2010.
Suu Kyi, on a two-week tour of Europe to gather support for Myanmar's democratic reforms, thanked Parliament members for their support, noting: "The right to think freely and to live according to our consciences is preserved, [but] this right is not yet guaranteed 100 percent. We still have to work hard before the basic law of the land, which is the constitution, will guarantee us the right to live according to our conscience."
European Parliament President Martin Schulz presented her with the prize, a European Parliament statement said.