Although the amount he was paid dropped from $13.2m in 2006, Wren topped the table ahead of Michael Roth, the Interpublic chief executive.
Roth's pay increased from $7.7m to $8.9m, while Sir Martin Sorrell, chief executive of WPP, took home £3.57m ($6.96m) after an 8.5% annual increase.
The figures were compiled by US trade title Advertising Age from holding companies' filings and generally include basic salary, bonuses, stock and option awards and other benefits.
Wren's total does not include the sum of over $10m he made in February by cashing in stock options.
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