No.
Masturbation can lead to an erection that increases the size of the penis, but it is temporary. After ejaculation the penis returns to normal size.
It’s not clear where this misconception came from. Some believe that it stems from the idea that doing Kegel exercises, as well as other penile muscle and tissue manipulations like masturbation, helps with bladder and sexual health, which can increase muscle strength. This may have led to the notion that stronger muscle equals bigger size — which is false.