Can i get braces on a single crooked tooth?

If you mean can you begin orthodontic treatment to correct only one malpositioned tooth, then the answer is yes. See a local orthodontist for a consultation.

In order to straighten a tooth there has to be adequate room. Often when 1 front tooth is malposed, adjacent teeth slide in behind the crooked one, making straightening difficult. No one brace will not correct 1 crooked tooth. What you need too do is schedule an Initial Orthodontic Examination, usually complimentary, and a discussion of your malocclusion and treatment options.