The violence broke out on Thursday in the northern village of Daih, west of Manama, where regime forces fired teargas to disperse the huge crowd.
Scores of people were arrested in the incident.
Meanwhile, a similar funeral procession was reportedly held in the village of Na’eem.
The demonstrators had gathered to mourn the deaths of four Bahrainis killed by regime forces in the past 24 hours.
Among the dead was a man identified as Muhammad Ali Ya’qhoub, who died on Wednesday after a Bahraini police car runs over him in the town of Sitra, south of the capital.
Earlier in the day, the body of a protester named Saeed Fakher was found one day after his arrest, while bearing horrific signs of torture.
On Tuesday, two other protesters died due to teargas inhalation during an anti-regime rally outside of Manama.
Bahrain has been hit by a wave of anti-regime protests since mid-February, which was immediately met with a brutal crackdown by the ruling Al Khalifa family.
Dozens of demonstrators have been killed and scores wounded in the popular uprising in the Persian Gulf nation.