Castro may refer to:
People with the surname Castro:
A place:
- in Chile:
- *Castro, Chile, capital of Chiloé Island
- in Italy:
- *Castro (city), a destroyed town in the province of Viterbo (Lazio)
- *Castro (LE), in the province of Lecce (Apulia)
- *Castro (BG), in the province of Bergamo (Lombardy)
- *Castro dei Volsci, in the province of Frosinone (Lazio)
- in Spain:
- *Castro Urdiales, a village in the province of Cantabria
- in the US:
- *The Castro, a predominantly gay neighborhood in San Francisco, California, USA
- *Castro Theatre, a landmark movie theater located in the Castro community
A company:
Other
- Castro culture, Iron-Age culture in Northern Portugal and in Galicia, Asturias and Cantabria (Northern Spain)
- Castro (village), Cividade, and Citânia, types of settlements of the Castro culture
- Castro (band), a cabaret-electronica band from Split, Croatia