Can a transgender man get an erection?

Answer 1

Yes. It is possible to get an erection with a clitoris or with a penis, because they are homologous and have similar form and function (therefore, female women can get erections as well as male men, they just aren't able to have penetrative sex with them because of the size). When a female-bodied person takes testosterone through hormone therapy, it causes the clitoris to increase several centimetres in size, which makes the erection more apparent, but may still be too small to have penetrative sex with.

Sometimes, transmen want to have a larger penis than what grew while taking testosterone. If so, they can have sex reassignment surgery (metoidioplasty or phalloplasty), which increases the size of the penis. Metoidioplasty makes the "grown" penis slightly longer and thicker, but still likely below average as compared to non-trans males. Phalloplasty takes skin from another part of the body and makes a penis-shaped tube to attach in the groin area. A phalloplasty penis is unable to get a natural erection, since it is not made of erectile tissue. To get an erection, transmen need to have erectile implants, like a stiff rod or a pump, which are usually used in non-trans (cis) males who have problems with impotence.

Answer 2

Yes, if they have a penis.