Bahrain's embassy in Damascus and the Syrian diplomatic mission in Manama have been operating "without interruption", the Bahraini foreign ministry said in a statement on Friday, a day after the United Arab Emirates reopened its embassy in Syria.
The decision to reopen the embassy follows months of increased diplomatic engagement between Damascus and Arab countries.
In an official statement, UAE's foreign minister said: "The step confirms that the UAE government is keen to restore relations between the two brotherly countries back to normal".
"As an important country in the Gulf, the UAE's move indicates that the Arab countries are facing the reality and adjusting regional policies, while the situation in Syria is becoming clear and the government can not be subverted", he said.
The border crossing between Syria and Jordan, another US -ally that backed the rebels, was reopened in October.
Russian President Vladimir Putin has lobbied hard for Syria to be readmitted to the league of Arab Nations.
Bahrain will reportedly reopen its embassy in Damascus next week.
BNA also said flights had been operating between Bahrain and Syria without interruption.
Talal Hassan, president of the Syrian community association in Tunisia, said this initiative reflects the friendship between the Syrian and Tunisian peoples, according to a Xinhua report.
Sudanese president, Omar al-Bashir, visited Damascus this week, in a move seen as a show of support for the Assad regime from Saudia Arabia, considered one of Khartoum's closest allies. The country was also expelled from the Arab League in 2011, as Riyadh and Doha backed anti-government Sunni forces trying to topple the Alawite-dominated government in Damascus.
It said that the resumption of ties aimed to "support the sovereignty and independence of Syria" and face "the dangers of regional interferences".
With most of Syria under government control after a bloody civil war, it appears many Arab governments have managed to stem the tide of revolution, crushing the initial hopes of an 'Arab Spring'.