Mae Hong Son
| Ban Rai Rock Shelter | MH0007 | 80 m |
| Australian expedition | 1986 | Grade UISv2 2-3-A |
| Big Knob Cave | MH0324 | 70 m/-20 m |
| Pang Ma Pha Cave Project | 1999 | Grade UISv2 4-3-F |
| Bor Nam Phi | MH0017 | 375 m/-106 m |
| SSAPO | 1991 | Grade UISv2 4-3-A |
| Coffin Cave MH0022 | MH0022 | 10 m |
| Australian expedition | 1986 | Grade UISv2 2-2-A |
| Coffin Cave MH0052 | MH0052 | 25 m |
| Australian expedition | 1986 | Grade UISv2 2-2-A |
| Ha Ko | MH0011 | 172 m |
| Australian expedition | 1984 | Grade UISv2 2-3-A |
| Hua Lao Butagaz | MH0088 | 10 m / -10 m |
| APS | 1985 | Grade UISv2 2-2-A |
| Hua Lao Kut Sam Sip | MH0090 | 45 m / -40 m |
| APS | 1985 | Grade UISv2 2-2-A |
| Long Snake System | MH0065 | 8,614 m / -61 m |
| Australian expeditons/NEUA 2023 | 1990/2023 | Grade UISv2 6-3-F/4-3-A |
| Mae Lana Crystal Cave | MH0051 | 556 m / -75 m |
| Pang Ma Pha Cave Project | 1999 | Grade UISv2 4-3-A |
| Nam Lang Sinkhole 1 | MH0409 | 394 m / -92 m |
| NEUA23 | 2023 | Grade UISv2 6-3-F |
| Pha Mon Coffin Cave | MH0005 | 90 m |
| Australian expedition | 1986 | Grade UISv2 1-1-A |
| Tham Ban Luk Khao Lam | MH0016 | 485 m / -113 m |
| D. Smart et al. | 1993 | Grade UISv2 3-3-A |
| Tham Ban Chabo | MH0053 | 100 m / -10 m |
| APS | 1985 | Grade UISv2 3-3-A |
| Tham Ban Tham North | MH0034 | 20 m |
| APS | 1985 | Grade UISv2 3-3-A |
| Tham Bendit 1 | MH0012 | 100 m / -6 m |
| APS | 1986 | Grade UISv2 3-3-A |
| Tham Bua | MH0068 | 30 m |
| Australian expeditons | 1986 | Grade UISv2 2-2-A |
| Tham Cha Row Tae De | MH0297 | |
| A. Seveau | Date unknown | Grade UISv2 0 |
| Tham Fossil | MH0258 | 741 m / -35 m |
| D. Smart & J. Geeson | 1995 | Grade UISv2 4-3-A |
| Tham Huai Hung 1 | MH0102 | 81 m |
| APS | 1985 | Grade UISv2 2-2-A |
| Tham Huai Hung 2 | MH0103 | 50 m |
| APS | 1985 | Grade UISv2 2-2-A |
| Tham Huai Kut Pba Teung | MH0220 | 278 m / -108 m |
| Smart et al. | 1993 | Grade UISv2 4-3-A |
| Tham Huai Pu | MH0294 | |
| A. Seveau | Date unknown | Grade UISv2 0 |
| Tham Huai Rai | MH0020 | 285 m / -10 m |
| Surveyor unknown | Date unknown | Grade UISv2 0 |
| Tham Hued/Tham Christmas | MH0033 | 1,840 m / -53 m |
| APS/MdG/M. Foakes | 1985-1988/1998 | Grade UISv2 4-3-A/2-1-A |
| Tham Ie | MH0031 | 100 m |
| APS | 1985 | Grade UISv2 2-2-A |
| Tham Ini | MH0038 | 10 m |
| APS | 1985 | Grade UISv2 2-2-A |
| Tham Jak Dtor | MH0174 | 783 m / -65 m |
| APS | 1987 | Grade UISv2 4-3-A |
| Tham Kaeo Komon | MH0243 | 120 m / -33 m |
| Surveyor unknown | Date unknown | Grade UISv2 0 |
| Tham Ko Koa | MH0295 | |
| A. Seveau | Date unknown | Grade UISv2 0 |
| Tham Kut Sam Sip | MH0089 | 100 m / -30 m |
| APS | 1985 | Grade UISv2 2-2-A |
| Tham Lao Hara Kiri | MH0015 | 12 m / -12 m |
| APS | 1985 | Grade UISv2 2-2-A |
| Tham Lod | MH0001 | 1,666 m / -20 m |
| Surveyor unknown | Date unknown | Grade UISv2 4-3-F |
| Tham Long Yaow | MH0019 | 516 m |
| Surveyor unknown | Date unknown | Grade UISv2 0 |
| Tham Mae Lana | MH0042 | 12,720 m / -150 m |
| Australian expeditions | 1986-1992 | Grade UISv2 2-1-A/4-3-A |
| Tham Mae Ngae | MH0179 | 45 m |
| A. Seveau | Date unknown | Grade UISv2 0 |
| Tham Mae Un Pi | MH0299 | 15 m |
| A. Seveau | Date unknown | Grade UISv2 0 |
| Tham Mae Tum | MH0252 | 600 m |
| Gruppo Speleologico Opitergino CAI Oderzo | 1992 | Grade UISv2 0 |
| Tham Mae Umong | MH0374 | 110 m |
| Pang Ma Pha Cave Project | 1999 | Grade UISv2 4-3-A |
| Tham Nam Bor Suksit | MH0110 | 150 m |
| A. Seveau & S. Paggasa | Date unknown | Grade UISv2 0 |
| Tham Nam Hu | MH0010 | 1,201 m / -31 m |
| Pang Ma Pha Cave Project | 1999 | Grade UISv2 4-3-A |
| Tham Nam Hu | MH0246 | 410 m / -10 m |
| APS | 1986-1988 | Grade UISv2 4-3-A |
| Tham Nam Lang | MH0057 | 8,950 m / -110 m |
| Australian expeditons/D. Smart et al. | 1984-1986/1993 | Grade UISv2 2-1-A/1-1-A |
| Tham Nam Rin 1 | MH0014 | 178 m/-33 m |
| Pang Ma Pha Cave Project | 1999 | Grade UISv2 4-3-F |
| Tham Nam Tok | MH0048 | 1.405 m |
| Australian expeditons | 1988 | Grade UISv2 0 |
| Tham Om Pai | MH0251 | 90 m |
| Gruppo Speleologico Opitergino CAI Oderzo | 1992 | Grade UISv2 0 |
| Tham Pakarang | MH0045 | 1,741 m / -163 m |
| Midlands Cave Rescue Organisation/Shepton Mallet Caving Club/Australian expeditions | 1988-1990/2019 | Grade UISv2 6-3-BEF/3-2-A |
| Tham Pang Kham | MH0074 | 1,370 m / -75 m |
| Surveyor unknown | Date unknown | Grade UISv2 0 |
| Tham Pha Daeng (MH0066) | MH0066 | 1,323 m / -22 m |
| Australian expeditons | 1988 | Grade UISv2 4-3-A |
| Tham Pha Daeng (MH0099) | MH0099 | 1,806 m / -15 m |
| APS | 1986-1987 | Grade UISv2 4-3-A |
| Tham Pha Daeng (MH0298) | MH0298 | 200 m / -60 m |
| A. Seveau | Date unknown | Grade UISv2 0 |
| Tham Pha Mon | MH0004 | 4,050 m / -108 m |
| APS | 1985 | Grade UISv2 4-3-5 |
| Tham Pha Nam Lang | MH0058 | 20 m |
| Australian expeditons | 1986 | Grade UISv2 2-2-A |
| Tham Pha Phuek | MH0076 | 680 m / -166 m |
| Australian expeditons | 1986-1990 | Grade UISv2 4-3-A |
| Tham Phet | MH0266 | 332 m / -45 m |
| Midlands Cave Rescue Organisation | 2019 | Grade UISv2 6-3-BF |
| Tham Pi | MH0030 | 30 m |
| APS | 1985 | Grade UISv2 2-2-A |
| Tham Pi Man Ban Ya Pa Nae | MH0056 | 50 m/-14 m |
| A. Sorn-Ek | 1997 | Grade UISv2 4-3-A |
| Tham Pi Man Bor Krai | MH0217 | 58 m/-13 m |
| A. Sorn-Ek | 1997 | Grade UISv2 4-3-A |
| Tham Pi Man Lang Jan | MH0039 | 156 m/-6 m |
| Midlands Cave Rescue Organisation | 2019 | Grade UISv2 6-3-F |
| Tham Pi Man Loong Long Yak | MH0264 | 50 m |
| Highland Archaeology Project | 2013-2015 | Grade UISv2 0 |
| Tham Pi Man Pang Kham East | MH0268 | |
| Surveyor unknown | Date unknown | Grade UISv2 0 |
| Tham Pi Man Pang Kham West | MH0078 | 200 m |
| Australian expedition | 1986 | Grade UISv2 4-3-A |
| Tham Pho So | MH0288 | |
| A. Seveau & C. Winayalai | Date unknown | Grade UISv2 0 |
| Tham Sua/Tham Lom | MH0061 | 3,436 m / -41 m |
| D. Smart et al. | 1993 | Grade UISv2 4-3-A |
| Tham Susa | MH0059 | 2,646 m |
| Australian expeditons | 1985-1990 | Grade UISv2 2-1-A |
| Tham Yin Lee Nan Nam | MH0230 | 250 m/-150 m |
| D. Smart | 1993 | Grade UISv2 1-1-A |
| Upper Tham Pha Mon | MH0040 | 90 m / -15 m |
| APS | 1985 | Grade UISv2 2-2-A |