Would be amazed if they even notice you applied before. I work in big org and am heavily involved in recruiting and I never know this. And from the other side I have often interviewed at orgs for second/third time.
Depending on job and org I would be tempted to bring it up and explain that opportunity wasn't right for you at the time, or similar. As a recruiter if I know that we liked you enough the first time round we will probably like you again, and I would personally change the interview to discuss n more depth the specific role and spend less time looking at competencies/CV.
But if you are applying for exactly same role then it could be slightly awkward.