Sky and EE racked up fewer complaints to Ofcom than other major broadband providers between October and December last year.
According to the regulator, Sky was the subject of just seven complaints per 100,000 customers during the fourth quarter of 2017.
Meanwhile, EE was ranked in second place, with 12 complaints per 100,000 customers.
This is the second quarter in succession in which Sky and EE have headed the list.
Virgin Media was also extremely consistent, retaining third position with just 14 complaints per 100,000 customers.
All three beat the industry average of 18 complaints per 100,000 customers during Q4, which was the same as the average recorded in the previous two quarters.
However, other providers performed relatively poorly, with both Plusnet and BT being the subject of 27 complaints per 100,000 subscribers.
TalkTalk was named as the worst performer, with Ofcom receiving 31 complaints per 100,000 customers about the company.
Jane Rumble, Ofcom’s Director of Consumer Policy, said: “These figures give people the information they need to shop around and compare providers’ performance.
“The scorecards also motivate companies to improve their performance, and we want to see them follow through on their promises to give customers better service.”