The Spanish-language MacArthur-Bates Communicative Development Inventories (S-CDIs) are well-established parent report tools for assessing the language development of Spanish-speaking children under 3 years. Here, we introduce the short-form versions of the S-CDIs (SFI and SFII), offered as alternatives to the long forms for screening purposes or in applications requiring a less-demanding instrument. Norming data (SFI: "n" = 601; SFII: "n" = 2,534) from diverse populations in Mexico are described. Developmental trends, gender differences, and socioeconomic status effects are reported that parallel those for the long forms. An additional small-scale study ("n" = 62) demonstrates strong convergence between responses on the long and the short forms. These results provide evidence that the S-CDI SFs have promise for a range of clinical and research applications.