Sky and EE racked up fewer complaints to Ofcom than other major broadband providers between July and September 2017.
According to the watchdog, Sky was the subject of just seven complaints per 100,000 customers during the third quarter of 2017.
EE was ranked in second place, with ten complaints per 100,000 customers, while Virgin Media also performed well, with 14 complaints per 100,000 customers.
All three beat the industry average of 18 complaints per 100,000 customers during Q3, which was the same as the average recorded in the previous quarter.
However, other providers performed relatively poorly. BT, for instance, was the subject of 25 complaints per 100,000 subscribers, while Plusnet received 27 complaints per 100,000 subscribers.
TalkTalk was named as the worst performer, with Ofcom receiving 30 complaints per 100,000 customers about the company.
Jane Rumble, Director of Consumer Policy at Ofcom, said: "We’re shining a light on how different providers perform and it’s clear many need to up their game on service quality and complaints handling.
"People expect high standards from their providers and companies must put their customers first."
TalkTalk has responded by admitting it is "obviously disappointed" by the figures.
The company attributed its relatively poor performance to the closure of its Indian call centres, which followed claims that some workers there were scamming callers.
"That move, and a radical shift to self-serve, has already delivered a material improvement in customer satisfaction and we expect complaint data for 2018 to reduce significantly," a spokesperson said.