Nessie \n(es)-sie\ as a girl's name. Diminutive of Agnes (Greek) "lamb". Also the name of the Loch Ness monster.
Nessie has 7 variant forms: Nesha, Nessa, Nessia, Nessya, Nesta, Neta and Netia.
For more information, see also the related name Vanessa.
Baby names that sound like Nessie are Nessy, Nesi and Nessah.