The carriage deal, of which commercial terms have not been disclosed, gives TalkTalk a big advantage in its battle with YouView rival BT.
Both firms are partners in the BBC-backed set top box company, but will launch rival YouView offerings bundled with their internet and phones services.
TalkTalk has also today agreed a deal to offer the full suite of channels from UKTV, the BBC Worldwide and Scripps Networks Interactive joint-owned broadcaster, on its YouView platform.
When TalkTalk's YouView product launches later in the year, a range of standard definition channels from Sky will be made available to TalkTalk's pay-TV customers as part of the wholesale deal.
This includes Sky1, Sky Living, Sky Arts 1 & 2, Sky News, Sky Sports News, Sky Sports 1, 2, 3 and 4, Sky Sports F1 and the full suite of Sky Movies channels.
"We are delighted to extend the distribution of our channels and to reach even more UK homes," said Rob Webster, the director of Sky's commercial group,
"As we continue to increase our investment in high-quality pay TV content, we want to achieve as broad a distribution as possible and grow our content related revenues.
"Following the conclusion of our successful negotiation with Talk Talk, we look forward to its customers enjoying the opportunity to subscribe to some of Sky's best content."
TalkTalk's managing director of TV Max Alexander added: "Adding the lineup of Sky channels to our YouView service is great news for our customers.
"Being able to offer a range of the most popular premium channels with the flexibility of being able to purchase content one month at a time is going to be hugely popular with our base and offers a great value addition to our YouView service."
> YouView set top box to finally launch this month
All the Sky channels will be delivered over broadband and come to TalkTalk's YouView service, where Sky's new NOW TV internet-delivered TV offering will also be available.
The deal allows TalkTalk to pull in customers with the offer of Sky's premium content. It also enables Sky to "extend the reach of its channels to more pay TV households and to grow its content related revenues".
But tellingly, Sky has opted to agree a YouView carriage deal with TalkTalk and not BT, after the latter firm recently agreed a massive deal to Premier League TV rights, creating a well funded new competitor for Sky.
TalkTalk has previously enabled its customers to subscribe to some Sky channels directly through Sky's 'Sky by Wire' service, and these customers will be able to migrate to the new YouView service, said TalkTalk.
The deal includes pay-TV networks Watch, home of the hit show Dynamo: Mission Impossible, along with Gold, Alibi, Eden, Good Food, Home and Blighty.
They will be available via the TalkTalk Player, a dedicated content portal only offered to TalkTalk's YouView customers.
UKTV's Freeview channels (Dave, Really and Yesterday) will also be available on YouView, and TalkTalk will offer the channel-branded on-demand content from factual channel Eden and leading food channel, Good Food.
This marks UKTV's third major on-demand deal over the past, following agreements with BT Vision and Sky.
Keith Porritt, the executive director of commercial at UKTV, said: "We're delighted to extend the reach of UKTV's highly popular branded Pay channels.
"Our agreement with TalkTalk means our channels and content will be available to even more consumers, and is recognition of the broad appeal of UKTV's suite of channels."
UKTV's video on-demand service will launch on TalkTalk's YouView platform later in the year, while the pay-TV channels will come to the TalkTalk Player at the same time.