The ongoing debate about financial regulatory reform and the looming European debt crisis are two dominant themes in Treasury & Risk's 100 Most Influential People in Finance list this year. The 2012 list includes lots of movers and shakers in Washington, reflecting the efforts there surrounding derivatives and money-market fund regulations, the Volcker Rule, convergence with international accounting standards, corporate tax reform and the federal deficit. There are also a number of global leaders on this year's list as companies watch to see whether the eurozone's problems will derail the global economic recovery. The heart of the list, though, remains the corporate finance executives—CFOs, treasurers, risk officers and others—who continue to come up with better ways to get the job done and innovative approaches to help their companies flourish.

CFOsWERNER BRANDTCFO AND MEMBER OF THE EXECUTIVE BOARDSAP Brandt has led the technology company's finance function through three major acquisitions— BusinessObjects, Sybase and SuccessFactors—in the last four years. Now he faces integrating a fourth acquisition, of e-commerce company Ariba.

JACK CALLAHANCFO AND EVPMCGRAW-HILL COS.Callahan, who joined McGraw-Hill in 2010 after serving as CFO at Dean Foods, is dealing with McGraw-Hill's split into two public units by spinning off its education unit. The effort involves extensive cost cuts and the disaggregation of the work done by the company's shared services center.