Parc de Can Mercader, Public park in Cornellà de Llobregat, Spain.

Parc de Can Mercader is a green space in Cornellà de Llobregat with extensive pathways, diverse gardens, a lake, and various outdoor areas distributed throughout the grounds. The landscape is organized in sections with distinct planting zones and open recreational spaces.

The estate, first documented in the 16th century as Mas Martí de l'Empedrat, passed to the Sadurní family in 1748 and to the Mercaders through an 1764 marriage. In 1814 Josep Ignasi de Mercader replaced crops with gardens, and between 1859 and 1864 Joaquim de Mercader demolished the old farmhouse and built the palace. Cornellà acquired the property in 1974, and the park opened on 11 September 1989.

The park hosts named annual events: the Jordiada in April, the Galician festival in June and the Trenet festival in October, plus summer nights on Fridays in July. Guided visits run at the Museu Palau Mercader, housed in the palace, which keeps a collection of 18th- and 19th-century furniture.

The park is bounded by the Reial Canal de la Infanta to the north, the carretera de l'Hospitalet to the south, the ronda de Dalt to the east and the avinguda de Can Mercader to the west. The avinguda dels plàtans crosses it from south to north: the large play esplanade with the little train lies in the lowest part, and the lake, gardens, paths and pool are further up. The palace and the masoveria stand in the central terraced section.

The park's name comes from the Mercader family, who acquired the estate in 1748 through the marriage of Maria de Sadurní to Felip de Mercader. The Trenet, a miniature train, runs on tracks in the lower esplanade and gives its name to the Festa del trenet held every October.