叫
jiào
Using the verb "jiao"
叫 means "to be called" — it's a verb, so 是 has no place here.
Subj. + 叫 + Name
How it works
你叫什么名字? is the standard way to ask someone's name, and 我叫王明 the answer. 我是叫王明 is wrong.
叫 is used with a full name or a given name. For surnames specifically there's 姓: 我姓王, 叫王明.
Examples
nǐ jiào shén me míng zì?
你叫什么名字？
What's your name?
wǒ jiào wáng míng
我叫王明。
My name is Wang Ming.
tā de gǒu jiào xiǎo bái
他的狗叫小白。
His dog is called Xiaobai.