Putin has been was sworn in for another six years as Russian president.
Mr Navalny, the opposition leader was detained soon after showing up on Moscow’s Pushkin Square.
Standing in the Grand Kremlin Palace’s ornately-decorated Andreyevsky Hall with his hand on a gold-embossed copy of the constitution, Mr Putin swore to serve the Russian people, safeguard their rights and freedoms, and defend Russian sovereignty.
“I consider it my duty and my life’s aim to do everything possible for Russia, for its present and for its future,” he said.
His win was his biggest ever and the largest by a post-Soviet Russian leader, something he and his allies say gave him an unequivocal mandate to govern.
Russia’s main opposition leader, Alexei Navalny, was barred from standing in the election.
On Saturday, Mr Navalny and around 1,600 anti-Kremlin activists were detained by police during street protests against Mr Putin ahead of his inauguration.Mr Navalny was detained soon after showing up on Moscow’s Pushkin Square.