Currently 19 countries are designated as MNNAs under 22 U.S.C. 2321k and 10 U.S.C. 2350a:

Argentina, Australia, Bahrain, Brazil, Colombia, Egypt, Israel, Japan, Jordan, Kenya, Kuwait, Morocco, New Zealand, Pakistan, Philippines, Qatar, South Korea, Thailand, and Tunisia.

In addition, P.L. 107-228 provides Taiwan shall be treated as an MNNA, without formal designation as such.