The incident occurred in Mand Bazaar of Turbat district, officials of the Levies militia said.
The victims were standing at a bus stop when motorcycle-borne gunmen fired indiscriminately at them and fled.
The three were hit by several bullets and died instantly.
Levies personnel cordoned off the area and conducted a search operation.
The motive for the killings could not immediately be ascertained.
Islamabad: Unidentified persons shot dead three men in the restive Balochistan province of southwest Pakistan on Sunday, security officials said.
First Published: Sunday, November 04, 2012, 22:53