The following are known CWCheat Codes for Metal Gear Solid: Portable Ops on Sony Playstation Portable (PSP).

_S ULES-00645
_G Metal Gear Solid: Portable Ops [EU]
_C0 infinite health
_L 0x00246C90 0x000000FF
_C0 Infinite Health
_L 0x08A46C90 0x012C012C
_C0 Infinite Items/Ammo
_L 0x68B04870 0x00000000
_L 0xB8B04870 0x00000000
_L 0x10000014 0x0000270F
_C0 Infinite Items/Ammo
_L 0x68B04870 0x00000000
_L 0xB8B04870 0x00000000
_L 0x10000018 0x0000270F
_C0 Infinite Items/Ammo
_L 0x68B04870 0x00000000
_L 0xB8B04870 0x00000000
_L 0x1000006C 0x0000270F
_C0 Infinite Items/Ammo
_L 0x68B04870 0x00000000
_L 0xB8B04870 0x00000000
_L 0x10000098 0x0000270F
_C0 Infinite Items/Ammo
_L 0x68B04870 0x00000000
_L 0xB8B04870 0x00000000
_L 0x10000040 0x0000270F
_C0 Infinite Knifes
_L 0x00278482 0x00000063
_C0 Infinite MK22 Ammo
_L 0x0137A204 0x000003E7
_C0 Infinite MK22 Supressor
_L 0x0137A216 0x000003E7
_C0 Infinite SAA
_L 0x113031F0 0000000072
_C0 INFINITE STAMINA
_L 0x00246C95 0x000000FF
_C0 M16A1 infinite
_L 0x11303248 0000000240
_C0 Max Items/Ammo
_L 0x68B04870 0x00000000
_L 0xB8B04870 0x00000000
_L 0x10000070 0x0000270F
_C0 Max Items/Ammo
_L 0x68B04870 0x00000000
_L 0xB8B04870 0x00000000
_L 0x1000009C 0x0000270F
_C0 Max Items/Ammo
_L 0x68B04870 0x00000000
_L 0xB8B04870 0x00000000
_L 0x10000044 0x0000270F
_C0 statmina
_L 0x00246C95 0x000000FF