Romoos is a municipality in the district of Entlebuch in the canton of Lucerne in Switzerland.

Of the rest of the land, 2.2% is settled (buildings or roads) and the remainder (1.4%) is non-productive (rivers, glaciers or mountains).

Of the agricultural land, 34.3% is used for farming or pastures, while 0.29% is used for orchards or vine crops.

Of the settled areas, 0.8% is covered with buildings, 0.24% is classed as special developments, 0.03% is parks or greenbelts and 1.13% is transportation infrastructure.

Most of the population (as of 2000[update]) speaks German (98.5%), with Albanian being second most common ( 0.7%) and Portuguese being third ( 0.4%).

The age distribution in Romoos is; 193 people or 27.1% of the population is 0–19 years old.