List of Supported Currencies in Netsuite | ISO 4217 Currency Codes

According to the HELP Article on Creating Currency Records, NetSuite supports all ISO 4217 standard currencies. 

Here is the list of ISO 4217 Currency Codes for reference:

AED United Arab Emirates Dirham
AFN Afghanistan Afghani
ALL Albania Lek
AMD Armenia Dram
ANG Netherlands Antilles Guilder
AOA Angola Kwanza
ARS Argentina Peso
AUD Australia Dollar
AWG Aruba Guilder
AZN Azerbaijan New Manat
BAM Bosnia and Herzegovina Convertible Marka
BBD Barbados Dollar
BDT Bangladesh Taka
BGN Bulgaria Lev
BHD Bahrain Dinar
BIF Burundi Franc
BMD Bermuda Dollar
BND Brunei Darussalam Dollar
BOB Bolivia Boliviano
BRL Brazil Real
BSD Bahamas Dollar
BTN Bhutan Ngultrum
BWP Botswana Pula
BYR Belarus Ruble
BZD Belize Dollar
CAD Canada Dollar
CDF Congo/Kinshasa Franc
CHF Switzerland Franc
CLP Chile Peso
CNY China Yuan Renminbi
COP Colombia Peso
CRC Costa Rica Colon
CUC Cuba Convertible Peso
CUP Cuba Peso
CVE Cape Verde Escudo
CZK Czech Republic Koruna
DJF Djibouti Franc
DKK Denmark Krone
DOP Dominican Republic Peso
DZD Algeria Dinar
EGP Egypt Pound
ERN Eritrea Nakfa
ETB Ethiopia Birr
EUR Euro Member Countries
FJD Fiji Dollar
FKP Falkland Islands (Malvinas) Pound
GBP United Kingdom Pound
GEL Georgia Lari
GGP Guernsey Pound
GHS Ghana Cedi
GIP Gibraltar Pound
GMD Gambia Dalasi
GNF Guinea Franc
GTQ Guatemala Quetzal
GYD Guyana Dollar
HKD Hong Kong Dollar
HNL Honduras Lempira
HRK Croatia Kuna
HTG Haiti Gourde
HUF Hungary Forint
IDR Indonesia Rupiah
ILS Israel Shekel
IMP Isle of Man Pound
INR India Rupee
IQD Iraq Dinar
IRR Iran Rial
ISK Iceland Krona
JEP Jersey Pound
JMD Jamaica Dollar
JOD Jordan Dinar
JPY Japan Yen
KES Kenya Shilling
KGS Kyrgyzstan Som
KHR Cambodia Riel
KMF Comoros Franc
KPW Korea (North) Won
KRW Korea (South) Won
KWD Kuwait Dinar
KYD Cayman Islands Dollar
KZT Kazakhstan Tenge
LAK Laos Kip
LBP Lebanon Pound
LKR Sri Lanka Rupee
LRD Liberia Dollar
LSL Lesotho Loti
LTL Lithuania Litas
LVL Latvia Lat
LYD Libya Dinar
MAD Morocco Dirham
MDL Moldova Leu
MGA Madagascar Ariary
MKD Macedonia Denar
MMK Myanmar (Burma) Kyat
MNT Mongolia Tughrik
MOP Macau Pataca
MRO Mauritania Ouguiya
MUR Mauritius Rupee
MVR Maldives (Maldive Islands) Rufiyaa
MWK Malawi Kwacha
MXN Mexico Peso
MYR Malaysia Ringgit
MZN Mozambique Metical
NAD Namibia Dollar
NGN Nigeria Naira
NIO Nicaragua Cordoba
NOK Norway Krone
NPR Nepal Rupee
NZD New Zealand Dollar
OMR Oman Rial
PAB Panama Balboa
PEN Peru Nuevo Sol
PGK Papua New Guinea Kina
PHP Philippines Peso
PKR Pakistan Rupee
PLN Poland Zloty
PYG Paraguay Guarani
QAR Qatar Riyal
RON Romania New Leu
RSD Serbia Dinar
RUB Russia Ruble
RWF Rwanda Franc
SAR Saudi Arabia Riyal
SBD Solomon Islands Dollar
SCR Seychelles Rupee
SDG Sudan Pound
SEK Sweden Krona
SGD Singapore Dollar
SHP Saint Helena Pound
SLL Sierra Leone Leone
SOS Somalia Shilling
SPL* Seborga Luigino
SRD Suriname Dollar
STD São Tomé and Príncipe Dobra
SVC El Salvador Colon
SYP Syria Pound
SZL Swaziland Lilangeni
THB Thailand Baht
TJS Tajikistan Somoni
TMT Turkmenistan Manat
TND Tunisia Dinar
TOP Tonga Pa'anga
TRY Turkey Lira
TTD Trinidad and Tobago Dollar
TVD Tuvalu Dollar
TWD Taiwan New Dollar
TZS Tanzania Shilling
UAH Ukraine Hryvna
UGX Uganda Shilling
USD United States Dollar
UYU Uruguay Peso
UZS Uzbekistan Som
VEF Venezuela Bolivar
VND Viet Nam Dong
VUV Vanuatu Vatu
WST Samoa Tala
XAF Communauté Financière Africaine (BEAC) CFA Franc BEAC
XCD East Caribbean Dollar
XDR International Monetary Fund (IMF) Special Drawing Rights
XOF Communauté Financière Africaine (BCEAO) Franc
XPF Comptoirs Français du Pacifique (CFP) Franc
YER Yemen Rial
ZAR South Africa Rand
ZMW Zambia Kwacha
ZWD Zimbabwe Dollar

 Note: 

Please refer to http://www.currency-iso.org/en/home/tables/table-a1.html