Oasis State Park, State park in Roosevelt County, United States.

Oasis State Park lies north of Portales in Roosevelt County, New Mexico, at 1,240 metres above sea level. Its grounds hold a fishing lake and sand dunes, with farmland surrounding the park and the city of Portales about 8 km to the south-west.

Oasis State Park lies north of Portales in Roosevelt County, New Mexico, at an elevation of about 1,240 metres. The surrounding plain is farmland, and the nearest larger town, Portales, is roughly 8 km to the southwest. The park is known for its fishing lake and sand dunes.

The park serves as a gathering place where local communities participate in fishing competitions and nature education events throughout the year. These activities connect visitors with the natural environment and each other.

The park lies just north of Portales off a paved access road, with the fishing lake and sand dunes at its centre and campsites set around them. Ground is sandy and exposed, so shade is limited away from the cottonwoods. The nearest town, Portales, is about 8 km south for supplies and fuel.

The fishing pond receives different fish species depending on the season, with rainbow trout stocked in winter and channel catfish in summer. More than 80 bird species have been recorded in the area, drawing birdwatchers year-round.