Peninsular Spanish (Spanish: español peninsular), also known as the Spanish of Spain (Spanish: español de España), European Spanish (Spanish: español europeo), or Iberian Spanish (Spanish: español ibérico), is the set of varieties of the Spanish language spoken in Peninsular Spain. This construct is often framed in opposition to varieties from the Americas and the Canary Islands.
From a phonological standpoint, there is a north-south gradient contrasting conservative and innovative pronunciation patterns. The former generally retain features such as /s/ – /θ/ distinction and realization of intervocalic /d/, whilst the latter may not. Processes of interaction and levelling between standard (a construct popularly perceived as based on northern dialects) and nonstandard varieties however involve ongoing adoption of conservative traits south and innovative ones north. In line with Spanish language's rich consonant fluctuation, other internal variation within varieties of Peninsular Spanish is represented by phenomena such as weakening of coda position -/s/, the defricativization of /tʃ/, realizations of /x/ as [x] and [h] and weakening or change of liquid consonants /l/ and /r/.