The Syrian Observatory for Human Rights said two of the executed were blamed for infidelity, with the rest blamed for joint effort with the Syrian government.
The executions, in the eastern Aleppo neighborhood of Shaar, were requested by a religious court that incorporates a few moderate dissident gatherings however is overwhelmed by Al-Nusra Front.
Every one of the 10 men were shot dead, the Observatory said.
Islamic courts have been set up in numerous towns and towns in Syria taken from government constrains by Islamist activists or jihadist bunches.
Al-Nusra has likewise done rundown executions of government troops in territories it has caught.
More than 230,000 individuals have been murdered in Syria since the contention began in Walk 2011 with hostile to government challenges.