Amanda Buffalo, NY?

TMZ has obtained video appearing to show Amanda Bynes walking the streets of Buffalo, NY moments ago -- but the strange part ... she keeps telling the photog, "We're not in Buffalo."

The footage was shot by a self-described "fan" who tells us he noticed Bynes wandering around aimlessly ... sporting huge sunglasses and a brown wig ... and decided to strike up a conversation with her.

The woman never denies that she's Amanda Bynes -- but when asked why she's in Buffalo, she repeatedly tells the photog, "We're not in Buffalo."

We reached out to Bynes via email -- but she wouldn't confirm or deny if she was actually in Buffalo.

If it's NOT Bynes in the video ... it certainly would be a helluva coincidence -- 'cause the lady in Buffalo doesn't just bear a striking resemblance to Amanda, she also has the same tattoo on her arm.

Video of Amanda in Buffalo here at Source

Oh lordt, dis bitch is taking this trainwreck to different cities