This is John

[anupumh]

Hi,

While introducing someone, is it appropriate to say...?

This is John.

Is it grammatically correct?

What could be the alternatives?

Thanks

[Offroad]

This is John.
Meet John
Let me introduce you to John.

[anupumh]

This is John.
Meet John
Let me introduce you to John.

Someone told me, it is infromal to say "this is john" you cant use it for living creatures/humans...