Most Tunisian political parties had boycotted the election, rejecting the constitutional basis for the vote and criticizing the electoral law that governed it.
They also slammed the polls as the culmination of President Kais Saied's march to one-man rule.
Tunisia's previous parliament, which Saied shut down last year as he moved to rule by decree in measures his foes called a coup, was elected with a turnout of about 40%.
Very low turnout for a largely powerless parliament likely dominated by independents lacking a unified agenda will give Saied's critics ammunition to question the legitimacy of his political changes.
That may become more of a challenge to the president as the authorities wrestle with the need to implement unpopular economic reforms such as subsidy cuts to secure an international bailout of state finances.
