| An iridaceous plant | 19 |
| An irid | 7 |
| An Iraqi | 8 |
| An Iranian religion | 19 |
| An Iranian language | 19 |
| An IRA may be part of it | 24 |
| An Iowa college | 15 |
| An Ionian island | 16 |
| An ion that migrates to the anode | 33 |
| An invitation might include one: Abbr. | 38 |
| An investment, perhaps | 22 |
| An Inverness is one | 19 |
| An inventor's monogram | 26 |
| An inventor's middle name | 29 |
| An inventor of the microphone | 29 |
| An invasion or hostile attack | 29 |
| An intriguing yarn | 18 |
| An Internet provider | 20 |
| An Internet address ender | 25 |
| An international society member | 31 |
| An intermission follower | 24 |
| An interest of T.A.E. | 21 |
| An interest of NOW | 18 |
| An intense emotion | 18 |
| An intelligence agent ___ | 25 |
| An integral can compute it | 26 |
| An intangible air | 17 |
| An insurance policy may not cover it | 36 |
| An instruction impossible to fulfill | 36 |
| An instant | 10 |
| An inspiring intro? | 19 |
| An inspiration to Beethoven | 27 |
| An Inspector Calls playwright | 32 |
| An inset might depict one | 25 |
| An insecticide, for short | 25 |
| An insecticide | 14 |
| An insect and a musical group are in his name | 45 |
| An inro may be attached to it | 29 |
| An inning's three? | 22 |
| An inning has six | 17 |
| An inlet | 8 |
| An inland sea | 13 |
| An initial, e.g. | 16 |
| An Ingmar protégée | 24 |
| An infusion | 11 |
| An inflorescence | 16 |
| An inferred conclusion | 22 |
| An inert gas | 12 |
| An inedible raspberry | 21 |
| An inedible orange | 18 |
| An Indochinese people | 21 |
| An Indo-European language | 25 |
| An Indo-European | 16 |
| An Indo-Chinese people | 22 |
| An individual | 13 |
| An indication | 13 |
| An Indic language | 17 |
| An Indian Ocean gulf | 20 |
| An Indian might get one: Abbr. | 30 |
| An Indian may wear it | 21 |
| An Indian may be wrapped in it | 30 |
| An Indian may be in one | 23 |
| An Indian may be in it | 22 |
| An Indian language | 18 |
| An Indian cotton | 16 |
| An Indian boat | 14 |
| An Indian accepted his Oscar | 28 |
| An inch equals 25.4 of these | 28 |
| An inch equals 2.54 of these | 28 |
| An inch equals 1,000 of these | 29 |
| An incendiary | 13 |
| An incarnation of Vishnu | 24 |
| An inability to dance | 21 |
| An in-law of the Borgias | 24 |
| An in-law | 9 |
| An improvising jazz musician ___ | 32 |
| An impressive degree? | 21 |
| An impressive array | 19 |
| An impossible dream | 19 |
| An imperfect ten? | 17 |
| An Imogene who made the scene | 29 |
| An image maker | 14 |
| An illusory promise, metaphorically | 35 |
| An illegal one could result in a fine | 37 |
| An ideologue might have one | 27 |
| An ideally perfect place | 24 |
| An ideal, in Chinese philosophy | 31 |
| An idea | 7 |
| An Idahoan might hoe one | 24 |
| An ID | 5 |
| An Icelandic monetary unit | 26 |
| An Icelandic literary work | 26 |
| An iceberg has one | 18 |
| An ice place to live? | 21 |
| An ice place to live | 20 |
| An ice cream treat | 18 |
| An ice cream | 12 |
| An ice bag, perhaps? | 20 |
| An ICBM | 7 |
| An iamb's second half gets it | 33 |