Activists said on Saturday that 31-year-old Ahmad Abdul Nabi was killed during a protest rally in the western village of Shahrakan.
They say dozens more were wounded after security forces fired tear gas and used water canon to break the protest.
Clashes were also reported between regime forces and protesters as thousands rallied in villages around the capital, Manama.
The demonstrators protested against the government’s brutality and called for the ouster of the al-Khalifa regime.
An elderly woman, identified as 59-year-old Abde Ali, also died on Friday from inhaling tear gas fired by regime forces in the village of Jidhafs near the capital.
Thousands of Bahrainis took to the streets across the country to take part in the funeral procession of those killed in recent regime crackdown on protesters.
In the town of Diraz, the protesters called for the trial of those who demolished places of worship.
Dozens of mosques and religious mourning halls have been destroyed over the past year.
Regime forces have killed scores of Bahrainis and arrested thousands more since the revolution began in February 2011.
