What's the best way to indicate in writing that someone is a lawyer?

I’m talking about a formal document, such as a program the person is to speak at, a resume, or booklet listing donors to a charity.

I know you can write “John Smith, Esq.” or “Jane Smith, Esquire” (Wait, do you write “Esquire” for women, too?) But that sounds kind of pretentious, doesn’t it? Or does it? And I know that a law degree is a JD, so it seems like you could write, “Kerry King, JD”, but that sounds weird to me, is it weird?

There’s also “Attorney at Law”. It smacks of like ambulance-chasers to me. What’s your take?

There’s no one person in question, I’m just asking for general reference.