IBM International Business Machines Corp

Exhibit 24.1 IBM New Orchard Road Armonk, NY 10504 February 25, 2014 Securities and Exchange Commission 450 Fifth Street, NW Washington, DC 20549 I hereby delegate to each of the following individuals, whose signatures appear below, to sign and file on behalf of Bruno V. Di Leo Allen, an executive officer of IBM, any Securities and Exchange Commission forms or documents in connection with any transactions by Bruno V. Di Leo Allen in IBM securities, including without limitation Form 3, Form 4, Form 5, or Form 144 under the Act. E. Barth _____________/s/ E. Barth___________________ D. Cummins _____________/s/ D. Cummins_________________ C. A. Hall _____________/s/ C. A. Hall_________________ M. A. Jefferson _____________/s/ M. A. Jefferson____________ G. A. Kuehnel _____________/s/ G. A. Kuehnel______________ L. M. Lalli _____________/s/ L. M. Lalli________________ S. Lunin _____________/s/ S. Lunin___________________ L. Mallardi ____________/s/ L. Mallardi_________________ This authorization shall remain in effect for as long as Bruno V. Di Leo Allen remains an executive officer of IBM. Very truly yours, /s/ Michelle H. Browdy Michelle H. Browdy Vice President, Assistant General Counsel and Secretary