Mj

A two-initial nickname occasionally used on birth certificates. This is especially popular for girls, thanks to Spiderman's sweetheart Mary Jane "MJ" Watson.

Mj is also given to boys, where it ranks #5765 in the US.

Pronounced em-JAY.

As of October 2026, Mj ranked #5765 in US births in 2025 SSA, peaked at #5465 in 2018.