Could a skin tag under my tongue be cancer?

Tag/Tongue/Cancer? Best to be examined and have tag removed and sent to pathology.
Would be rare. Would not be the first thing that i would think of. But you should raise your concerns with your friendly primary care physician.
Not likely. A "skin tag" is probably just a benign mucosal lesion and nothing to worry about. However, without seeing it, it is impossible to know for sure. Ask your dentist or doctor to take a look.
Unknown. Difficult to answer without seeing it and knowig general and social history. I would recommend that it be evaluated and, if necessary, biopsied by your local otolaryngology (ENT) doctor.

Related Questions

This may be word but under my tongue it looks like almost a skin tag that kind of flops around could this be dangerous and need to be looked at?

Likely not dangerous. Did this develop recently or has it been there a while? Could it be that it the normal structure, called frenulum and you only noticed it recently. There is no immediate danger, you can discuss it with your doctor when you see her/him next. Read more...

Skin flabs under my tongue that look pointed, almost like skin tags but they just come out from under my tongue. What is it? Contagious?

Probably just. Probably just normal anatomy or a variation of normal. See a dentist just to be sure. Read more...
Normal anatomy. The little finger like projections under your tongue are completely normal. They can look quite scary and to be honest, the first time I noticed them I thought for sure they weren't supposed to be there! Don't worry though. And no they are not contagious! Read more...

There are a lot of skin tag, triangular, looking flabs of skin under my tongue. They run along the parallel lines. HPV? They just appeared.

Flabs of skin. They probably didn't just appear and they are probably normal anatomy. You need to consult a dentist. We can't see or diagnose them over the internet. What do you think the red itchy spot that's on my hand right now is? Read more...