Tamarindo Airport (IATA: TNO, ICAO: MRTM) is a private airport that serves Tamarindo, a coastal resort in Guanacaste province, Costa Rica. It receives daily scheduled flights from San José and Liberia, and private charter services are available. During the rainy season, the airport is frequently closed due to the weather.

Tamarindo airport is the fifth-busiest in the country by passenger traffic, the third-busiest domestic-only airport after Puerto Jiménez and Quepos, and the busiest privately managed airport in Costa Rica.