Here are some possibilities:
* Small: This is the most common and general translation.
* Little: This is similar to "small," but often suggests something cute or endearing.
* Tiny: This implies something very small.
* Short: This can be used for physical height or for duration.
* Minor: This can be used to describe something unimportant or insignificant.
* Young: This can be used to describe someone who is young in age.
To give you the most accurate translation, please provide the sentence or context where "pequeño" is used.