Certifications for Business Analysts from IIBA ( International Institute of Business Analysis) is very well known in the industry. The certification is based on 2-4 days of class room training imparted by a certified BA practitioner. There is also a 21PDU awarded to certified PMP professionals. The Certified Business Analysis Professional (CBAP) training covers the essential tools for Business Analysts like UML, Requirement Elicitation, BPM etc. The certification is awarded after someone clears the exam, which is based on BABOK ( Business Analysis Body of Knowledge by IIBA).