Janith is of Sanskrit origin, meaning 'knowledge' or 'wisdom'. It's a unisex name, derived from the Sanskrit word 'Jnana', which signifies intelligence and learning. Janith has gained popularity worldwide, particularly in countries with significant Indian and Sri Lankan diaspora.
Janith had a peak in popularity from the late 1930s to the mid-1940s with over 25 births each year between 1939 and 1947, reaching its highest point in 1942 with 36 births. However, it quickly declined afterwards, falling below 20 births per year from 1948 onwards, and dropping to as low as 5 births in some years post-1960. Overall, there were a total of 631 Janiths born over this period.