| ABRAHAM LINCOLN MINING COMPANY, LIMITED | — | 0000000023 | 1905-12-22 | Suspended | |
| ADAMS MINING CO | — | 0000000119 | 1905-06-15 | Suspended | BOISE |
| ALBION MERCANTILE COMPANY, LIMITED | — | 0000000271 | 1905-11-18 | Suspended | |
| ALDER GULCH GOLD MINING COMPANY, LIMITED | — | 0000000310 | 1905-09-20 | Suspended | |
| ALEXANDER-FREIDENRICH CO. | — | 0000000322 | 1905-12-09 | Suspended | |
| ALLEN MERCANTILE COMPANY, LIMITED | — | 0000000379 | 1905-07-12 | Suspended | |
| ALLIE MINING COMPANY, LIMITED | — | 0000000426 | 1905-01-23 | Dissolved | |
| AMERICAN FALLS POWER COMPANY | — | 0000000639 | 1905-06-17 | Suspended | |
| AMERICAN FALLS STATE BANK (THE) | — | 0000000660 | 1905-07-11 | Suspended | |
| AMERICAN MEAT MARKET, LIMITED (THE) | — | 0000000714 | 1905-10-12 | Suspended | |
| AMERICAN TRUST AND SAVINGS BANK (THE) | — | 0000000766 | 1905-07-15 | Suspended | |
| AMMON MERCANTILE COMPANY, LIMITED | — | 0000000835 | 1905-10-09 | Suspended | |
| ANGELES GOLD COMPANY, LIMITED | — | 0000000882 | 1905-04-13 | Suspended | |
| ARMORY COMPANY, LIMITED (THE) | — | 0000000975 | 1905-05-12 | Suspended | |
| ATLANTA EAGLE MINING AND MILLING COMPANY (THE) | — | 0000001087 | 1905-04-01 | Suspended | ATLANTA |
| ATLANTA GOLD MINING COMPANY, LIMITED | — | 0000001104 | 1905-08-14 | Suspended | |
| AUSTIN BROTHERS ASSOCIATION | — | 0000001190 | 1905-03-15 | Suspended | BLACKFOOT |
| AVONDALE STOCK FARM COMPANY (THE) | — | 0000001218 | 1905-03-08 | Suspended | |
| B. R. LEWIS LUMBER COMPANY | — | 0000003548 | 1905-02-17 | Suspended | COEUR D'ALENE |
| BANCROFT LAND AND IRRIGATION COMPANY (THE) | — | 0000001336 | 1905-03-25 | Suspended | BANCROFT |
| BANCROFT LIME COMPANY, LIMITED | — | 0000001341 | 1905-04-05 | Suspended | |
| BANK OF EMMETT | — | 0000001386 | 1905-11-07 | Suspended | |
| BANK OF OROFINO (THE) | — | 0000001449 | 1905-06-23 | Suspended | |
| BANK OF TROY | — | 0000001469 | 1905-05-23 | Suspended | |
| BANNER MINING AND MILLING COMPANY (THE) | — | 0000001532 | 1905-06-15 | Dissolved | |
| BEAR CREEK MINING COMPANY, LIMITED | — | 0000001827 | 1905-03-06 | Suspended | |
| BEAR LAKE STATE BANK | — | 0000001869 | 1905-08-14 | Merged | |
| BEN-GUERR GOLD COMPANY, LIMITED | — | 0000002059 | 1905-03-21 | Suspended | |
| BERNARD MERCANTILE COMPANY | — | 0000002104 | 1905-04-21 | Suspended | |
| BETHEL PRESBYTERIAN CHURCH OF CANYON COUNTY, IDAHO | — | 0000002131 | 1905-11-25 | Suspended | |
| BIG BEAR LUMBER COMPANY, LIMITED | — | 0000002158 | 1905-01-28 | Suspended | |
| BIG BUTTE CANAL CO. LIMITED | — | 0000002172 | 1905-04-10 | Suspended | |
| BIG CREEK GOLD MINING COMPANY | — | 0000002184 | 1905-03-10 | Suspended | BOISE |
| BIG CREEK GOLD MINING COMPANY, LIMITED (THE) | — | 0000002187 | 1905-11-25 | Suspended | |
| BIG FOUR MINING AND MILLING COMPANY, LIMITED | — | 0000002263 | 1905-10-09 | Suspended | |
| BIG GIANT GOLD MINING CO. LTD. | — | 0000002273 | 1905-01-31 | Suspended | |
| BIG LOST RIVER LAND AND IRRIGATION COMPANY, LIMITED | — | 0000002299 | 1905-10-12 | Suspended | |
| BINGHAM COUNTY FRUIT GROWERS ASSOCIATION | — | 0000002354 | 1905-05-09 | Suspended | |
| BINGHAM LODGE NO. 14, INDEPENDENT ORDER OF ODD FELLOWS | — | 0000002366 | 1905-02-09 | Dissolved | |
| BISHOP MINING AND MILLING COMPANY (THE) | — | 0000002377 | 1905-09-11 | Suspended | MOSCOW |
| BITTER ROOT GOLD MINING AND MILLING COMPANY | — | 0000002387 | 1905-01-28 | Suspended | LEESBURG |
| BLACK BEAR CONSOLIDATED MINING COMPANY, LTD. | — | 0000002422 | 1905-08-08 | Suspended | |
| BLACK HAWK MINING COMPANY, LIMITED | — | 0000002692 | 1905-03-09 | Suspended | |
| BLACK SAND MINING COMPANY (THE) | — | 0000002762 | 1905-05-09 | Suspended | |
| BLACK WARRIOR CONSOLIDATED MINING COMPANY, LIMITED | — | 0000002779 | 1905-07-17 | Suspended | |
| BLACK WARRIOR GOLD MINING & MILLING COMPANY | — | 0000002788 | 1905-07-22 | Suspended | |
| BLAINE COUNTY MILLING COMPANY, LIMITED | — | 0000002621 | 1905-10-02 | Suspended | |
| BOISE ATHLETIC ASSOCIATION, LIMITED | — | 0000002808 | 1905-04-07 | Suspended | |
| BOISE BUILDING MATERIAL COMPANY, LIMITED | — | 0000002877 | 1905-07-20 | Suspended | |
| BOISE INTERURBAN RAILWAY COMPANY, LIMITED | — | 0000003179 | 1905-08-22 | Suspended | |