* Most American English speakers pronounce "aunt" with the vowel sound in "cot" or "hot". This is known as the "cot-caught merger".
* British English speakers typically pronounce "aunt" with the vowel sound in "caught". This is known as the "cot-caught distinction".
So, depending on where you are from, the pronunciation of "aunt" could be:
* American English: ant (like "want")
* British English: ahnt (like "caught")
It's also worth noting that some people, regardless of dialect, may pronounce "aunt" with the "caught" sound even if their overall pronunciation is typically American.