The poll's release marks International Data Protection Day, celebrated on 28 January.
The poll found that 73 percent of the Dutch refuse to allow the use of their personal data for advertising on the internet, followed by 70 percent of people in Finland, 63 percent in each of Denmark and Germany and 62 percent in Spain.
The share of people opposed to the use of their personal data online was the least in Bulgaria (10 percent), Romania (20 percent), Greece (29 percent), Slovakia (30 percent) and Latvia (32 percent), according to the findings.
The European Union's average was estimated at 50 percent.
The survey was conducted remotely among people aged from 16-74 in the three months prior to the publication.