Omar Byron T. Mier is a Philippine businessperson who has been at the helm of 10 different companies. Presently, he holds the position of Chairman at Japan-PNB Leasing & Finance Corp., Chairman for PNB Forex, Inc., Chairman for PNB Italy SpA, Chairman at Japan Pnb Equipment Rentals Corp. and President for PNB International Investments Corp.

He is also on the board of 14 other companies.

In the past Omar Byron T. Mier occupied the position of Chairman for Victorias Milling Co., Inc., Chairman for Bulawan Mining Corp., Chairman of Philippine National Bank (Europe) Plc, Chairman of PNB RCI Holding Co. Ltd., President, Chief Executive Officer & Director at Philippine National Bank, Country Risk Manager & Senior Credit Officer at Citicorp Financial Services & Insurance Brokerage PH, Inc., Senior Credit Officer at Citibank Malaysia (L) Ltd., Deputy General Manager & Head-Corporate Banking at Deutsche Bank AG (Manila Branch) and Head-Multinational Corporations Group at Citibank NA.

He received an undergraduate degree from the University of the Philippines.