This question already has an answer here:

Ex: This is John.

Is it correct way to say my name??

This doubt has arisen when my friend told that "This is" structure is only used to specify about a thing not a person.

marked as duplicate by FumbleFingers, RegDwigнt Jan 4 at 14:44

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  • That structure is only used to identify oneself on the telephone. It is not used in person, or when the addressee can see the speaker over a screen. In those cases, one says I am instead of This is. Using a third person pronoun (this instead of first person I) is appropriate when speaking of an unseen human interlocutor, but when the speaker is visible, first person is appropriate and not third. – John Lawler Jan 4 at 14:55