Manu-smriti is the popular name of the work, which is officially known as Manava-dharma-shastra. It is attributed to the legendary first man and lawgiver, Manu.
Manusmrriti in Sanskrit (Word-Docx)
Download translations from VedPuran.net:
Manusmriti (English) (Download)
Manusmiriti Hindi – Sanskrit (Download)