Yes. Don't attempt to infer gender from names. Mostly, you don't need it. You'll often get it wrong. You may end up pissing off transgender people. Unless you

Yes. Don't attempt to infer gender from names. Mostly, you don't need it. You'll often get it wrong. You may end up pissing off transgender people. Unless you are running a dating site (in which case, you should actually get people to specify which gender(s) they are—and, yes, people will want options beyond male and female) there is no need for it. If you want to know my gender, ask. Don't infer.