Australia has been ranked last out of 28 countries when it comes to broadband satisfaction, a new international poll shows.

Just 32 per cent rated the quality of Australia's broadband fairly or very good which was down 6 percentage points compared with a year ago and much lower than the international average of 56 per cent.

There were only two other nations in the international survey where fewer than four in ten respondents rated broadband as good - Italy (35 per cent) and Brazil (37 per cent).

The share of Australians rating broadband fairly or very poor has climbed 8 percentage points since last year to 61 per cent.