The soldiers were killed in separate incidents on Saturday in the Deh Rawod area of southern Afghanistan and two Afghan soldiers also died in the fighting, Defense Chief of Staff Dick Berlijn said in a statement.
The deaths bring the total number of Dutch soldiers killed in Afghanistan to 14.
Here are figures for foreign military deaths in Afghanistan since the Taliban government was toppled in 2001:
NATO/U.S.-LED COALITION FORCES:
United States 480
Other nations 69
* NOTE: Figures supplied by German Ministry of Defence.