The 27-year-old midfielder has signed a deal which will keep him at White Hart Lane until at least 2021.
HypervenomX Proximo IC black Official confirmation of the deal emerged just after Sissoko posted a picture of himself on Twitter holding up a Spurs shirt, which he captioned: "Very happy to join Spurs for the next five years!"
magista obra yellow At one point Everton appeared to be favourites to sign Sissoko but Spurs matched their £30m offer and the Merseyside club eventually withdrew their interest.
X 16+ Purechaos black Sissoko impressed for France at Euro 2016 but was unable to prevent Newcastle's relegation from the Premier League last season.
He has pushed for a transfer this summer after claiming it would be difficult to retain his international place if he was playing his football in the Sky Bet Championship.
Superfly V Mercurial blue Newcastle wrote in a statement on Wednesday night: "Midfielder Moussa Sissoko has completed his transfer to Tottenham Hotspur for an undisclosed fee.
"The 27-year-old France international arrived on Tyneside in January 2013 from Toulouse and made 133 appearances in all competitions for the Magpies during three-and-a-half years at St James' Park, scoring 12 goals.
MagistaX P roximo Black "Sissoko's final outing for United came in a 5-1 victory over his new side, Spurs, on the last day of the 2016-17 campaign."