The company said supplies to consumers in the republic would continue without interruption during the period, drawing on domestic reserves and additional volumes of natural gas from Iran.
The shutdown is for planned preventive and repair work on the North Caucasus–Transcaucasia trunk pipeline inside Russia, Gazprom Armenia said.
Russian gas deliveries to Armenia were also suspended in the second half of September a year ago for scheduled repairs, Meduza reported.
The suspension comes amid deteriorating relations between Moscow and Yerevan. Meduza noted that ties worsened sharply shortly before Armenia's parliamentary elections in early June. Russia accuses Prime Minister Nikol Pashinyan of pursuing a pro-Western course. In response to Yerevan's attempts to move closer to Europe, Russia has begun imposing restrictions on imports of Armenian goods.
Russia, Belarus, Kazakhstan and Kyrgyzstan are also demanding that Armenia hold a referendum and decide whether the country remains in the Eurasian Economic Union or continues to seek membership in the EU.
On September 11, Pashinyan said Armenia was looking for alternatives to Russian gas. According to him, gas in Armenia is not cheap, and Gazprom Armenia makes large profits. "From the border to the consumer, compared with other countries, Armenia has the largest increase in pricing," the prime minister said.
Kremlin spokesman Dmitry Peskov had earlier said the preferential price for Russian gas for Armenia could be set on a market basis if Yerevan decides to leave the EAEU.