| Ian Janis | Present company | Capitol | E-ST 683 |
| Ian Janis | Night Rains | CBS | 83802 |
| Ides of March | Vehicle | Warner | WS 1863 |
| Ides of March | Common band | Warner | WB 46104 |
| If | Double diamond | Metromedia | BML1-0174 |
| If | Tea-break over- back on your 'eads | Charly | CR 300010 |
| Illsley john | Never told a soul | Vertigo | 822 239 |
| Illusion | Out of the mist | Island | ILPS 9489 |
| Illusion | Illusion | Island | ILPS 9519 |
| Imlach hamisch | ballads of booze | Transatlantic | XTRA 1094 |
| Imlach hamisch | live | Transatlantic | XTRA 1050 |
| Imlach hamisch | Murdered ballads | Transatlantic | XTRA 1131 |
| Incredible string band | the 5000 spirits | Elektra | EKS-74010 |
| Incredible string band | Be glad for the song has no ending | Island | ILPS9140 |
| IQ | Are you sitting comfortably? | Squawk | 836 429-1 |
| Iron butterfly | Métamorphosis | ATCO | 503.054 |
| Isley,Jasper,Isley | Different drummer | EPic | EPC 450143 |
| Isotope | Isotope | Gull | GULP 1002 |
| Isotope | Illusion | Gull | 6.22113 AS |
| Isotope | Deep end | Gull | 163.302 |
| It's a beautiful day | …. Today | CBS | S 65483 |
| It's a beautiful day | Marrying maiden | CBS | 64 065 |