An algae farm is a facility where microalgae are grown and harvested for various purposes. Algae are an important source of biomass, biofuels, food supplements, animal feed and other products. Algae can also absorb carbon dioxide from the air, contributing to climate change mitigation.

There are different types of algae farms, which vary in size, location, design and technology. Some algae farms use open ponds or tanks filled with seawater or fresh water. Other algae farms use closed systems such as photobioreactors or tubes, which allow better control of environmental conditions.