Is it allowed to have several <title> tags?

Question

I was looking at the title tag http://www.w3schools.com/TAGS/tag_title.asp So would it be legal if I had several titles with different lang IDs?

Answer 1

No. Only one <title> element is allowed.

Source:

• For HTML5:

  There must be no more than one <title> element per document.

• For XHMTL 1.0 Strict DTD:

  Exactly one title is required per document.