"Αυτή είναι μία πατάτα."

Translation: This is a potato.

[AustinLefebvre]

Could this also be "She is a potato"? (lol)

[jaye16]

Depends on your opinion. She wouldn't like to hear that. :)

[GiorgioYianni]

Yes, but not a friendly one after she hears this. :-)

[jaye16]

Yup!

[TirilElise6]

Could it be "It is a potato" instead of "This is a potato"?

[jaye16]

Yes, that's an accepted translation.

[DennerCassio]

I think the answer is no.

Αντός - He
Αντή - She
Αντό - It / This

[jaye16]

Sorry, the words you wrote do not exist. You used the letters....

αυτός -> he, αυτή ->she, αυτό ->it