Is the Hague certified English to Spanish-speaking countries recognized?

Of course you can. Hague authentication means a document that is authenticated in accordance with the 1961 Hague Apostille Convention, which is recognized both in Spain and in other Contracting States. The Hague-certified documents can be used to handle various legal procedures in Spain and other contracting states, such as visas, immigration applications, and study abroad applications. If you need to convert documents from English to Spanish, you can find an experienced translation company or certified translator who can ensure that the translated documents comply with Spanish laws and regulations and can provide you with a Hague certified translation service.