Viliamu is of Samoan origin, meaning 'will return'. It is a male given name, composed of two parts: 'Vili', which means 'to return', and '-amu', a suffix that can indicate the future tense or a wishful desire. Thus, Viliamu translates to 'will return' or 'may he/she return', often associated with the hope for a safe journey or homecoming. This name is common among people of Samoan descent and has been adopted by other Polynesian cultures as well.
The name Viliamu experienced a notable decline in popularity over the fifteen-year span from 2006 to 2021, with the number of births dropping by half from six to five.