Rema Fahan, who is a member of the Turkey-born umbrella group, said on Friday that Amman has given the go-ahead for a representative office in Jordan.
Fahan claimed that the office was being established to coordinate political affairs and refugee issues.
The Western-backed opposition group has already established offices in several countries, including Qatar, Turkey, and Egypt.
On Wednesday, Ahmad Assi Jarba, the so-called Syrian National Council (SNC) leader, reportedly led a delegation in talks with Jordan's Foreign Minister Nasser Joudeh.
A member of the delegation said that the two sides discussed free movement of opposition officials between Jordan and areas in Syria where militants are active.
The war in Syria started in March 2011, when pro-reform protests turned into a massive insurgency following the intervention of Western and regional states.
More than 100,000 Syrians have died in the foreign-hatched civil war.
The United Nations says more than 100,000 people have been killed and a total of 7.8 million of others displaced due to the violence and fled to neighboring countries, including Iraq, Jordan and Lebanon.
NTJ/NJF