It was the first time that the operator of the stricken plant, Tokyo Electric Power Co (TEPCO), has been ordered to pay compensation for a suicide linked to the 2011 nuclear disaster.
A 9.0 undersea quake triggered a massive tsunami that swamped cooling systems at the Fukushima Daiichi power plant in Japan's northeast, sparking the worst atomic accident in a generation.
Hundreds of thousands of people were evacuated around the plant amid fears of rising radiation.
Her husband and three children sued TEPCO for damages, arguing the forced evacuation was responsible for the symptoms of depression she displayed.
More From This Section
The Fukushima District Court today ordered TEPCO to pay a total of 49 million yen (USD 472,000) to her family, Jiji Press and public broadcaster NHK said.
The family had demanded 91 million yen.
In a statement, TEPCO apologised again to the people of Fukushima for the disaster, and said it would "examine the ruling and continue to cope with the issue sincerely."