1) Cato Institute $8,450,000
2) Citizens for a Sound Economy Foundation $6,025,375
3) George Mason University $2,311,149
4) George Mason University Foundation, Inc. $2,074,893
6) Heritage Foundation, The $1,004,000
7) Institute for Justice $1,000,000
8) Foundation for Research on Economics and the Environment $810,000
9) Reason Foundation, The $642,000
10) Federalist Society for Law and Public Policy Studies, The $504,000
12) Institute for Humane Studies $455,000
13) Pacific Research Institute for Public Policy $385,000
14) Washington Legal Foundation $350,000
15) Capital Research Center $340,000
16) Competitive Enterprise Institute $254,460
20) Ethics and Public Policy Center, Inc. $190,000
22) National Center for Policy Analysis $175,000
23) Citizens for Congressional Reform Foundation $175,000
24) Manhattan Institute for Policy Research, Inc. $125,000
25) American Legislative Exchange Council $120,000
26) Acton Institute for the Study of Religion and Liberty $115,000
28) Political Economy Research Center, Inc. $80,000
29) Media Institute $60,000
30) National Foundation for Teaching Entrepreneurship $60,000
31) University of Chicago $59,000
32) Defenders of Property Rights $55,000
33) University of Kansas Endowment Assocation $50,000
36) Texas Public Policy Foundation $44,500
37) Center for Individual Rights, The $40,000
38) Heartland Institute $40,000
39) Texas Justice Foundation $40,000
40) Institute for Policy Innovation $35,000
42) Center of the American Experiment $31,500
43) Atlas Economic Research Foundation $28,500
44) Young America's Foundation $25,000
45) Henry Hazlitt Foundation $25,000
47) Atlantic Legal Foundation $20,000
48) National Taxpayers Union Foundation $20,000
49) Families Against Mandatory Minimums $20,000
50) Philanthropy Roundtable $19,200
51) Free Enterprise Institute $15,000
52) John Locke Foundation $15,000
53) Hudson Institute, Inc. $12,650
54) Alexis de Tocqueville Institution $12,500
55) National Environmental Policy Institute $12,500
56) Washington University $11,500
57) Pacific Legal Foundation $10,000
58) American Council for Capital Formation $10,000
60) Institute for Political Economy $8,000
62) State Policy Network $6,500
64) Fraser Institute, The $5,000
65) Mackinac Center, The $5,000
66) Institute for Research on the Economics of Taxation $5,000
68) Institute for Objectivist Studies $5,000
Some additional recipients by amount granted by the Charles G. Koch Foundation
http://www.mediatransparency.org/recipientsoffunder.php?funderID=9