The deal, signed by the Syrian government and the armed opposition, ends hostilities at midnight local time, he said. Syria's military today said it agreed to the nationwide cease-fire.
"Three documents have been signed," Putin said during a meeting with Russia's foreign and defense ministers. "The first document is between the Syrian government and the armed opposition on a cease-fire on the territory of the Syrian Arab Republic. The second document is a package of measures to control the cease-fire regime. And the third document is a statement on readiness to begin peace talks on the Syrian settlement."
Russian Defense Minister Sergei Shoigu said the truce will include 62,000 opposition fighters across Syria, the AP reported.
The Kremlin said Putin spoke with Turkish President Recep Tayyip Erdogan by telephone to discuss the agreement and both "are satisfied."
The U.N. special envoy for Syria, Staffan de Mistura, "welcomes the announcement of a nationwide cease-fire" and "hopes that the implementation of the agreement will save civilian lives, facilitate the delivery of humanitarian assistance across Syria and pave the way for productive talks in Astana," according to a statement from his spokeswoman, Jessy Chahine.
ABC News' Benjamin Gittleson and Tanya Stukalova contributed to this report. The Associated Press also contributed to this report.