| Iailer | A variation in the spelling of the name: jailor. |
| Iailere | A variation in the spelling of the name: jailor. |
| Iailour | A variation in the spelling of the name: jailor. |
| Iaioler | A variation in the spelling of the name: jailor. |
| Iaoler | A variation in the spelling of the name: jailor. |
| Iaolere | A variation in the spelling of the name: jailor. |
| Iaylar | A variation in the spelling of the name: jailor. |
| Iaylarde | A variation in the spelling of the name: jailor. |
| Iayler | A variation in the spelling of the name: jailor. |
| Iaylere | A variation in the spelling of the name: jailor. |
| Iaylour | A variation in the spelling of the name: jailor. |
| Iceman | One engaged in the ice trade, or in harvesting ice for storage and sale. Also, one who delivers ice for domestic use. |
| Icemaster | A pilot or sailing-master who has special experience in navigating vessels among ice-floes. |
| Icer | One who ices; spec. a worker who prepares icing and applies it to the surface of cakes, pastry, etc. |
| Ichthyographer | A writer on fishes. |
| Ichthyologist | One versed in ichthyology; a student of the natural history of fishes. |
| Iconomicar | A writer on husbandry. |
| Idleman | One who has no occupation; formerly, in Ireland, a 'gentleman', as opposed to a working-man. |
| Iernmonger | A variation in the spelling of the name: ironmonger. |
| Iewellere | A variation in the spelling of the name: jeweler |
| Imager | A maker of images; a sculptor, carver, etc. Also, applied to a painter. |
| Indigo-peddler | According to Everett B. Wilson in his book Early America At Work, published in 1963, this was one who sold the dyestuff derived from indigo, needed to dye wool. |
| Ingeneer | A variation in the spelling of the name: engineer. |
| Ingener | A variation in the spelling of the name: engineer. |
| Ingenier | A variation in the spelling of the name: engineer. |
| Ingienere | A variation in the spelling of the name: engineer. |
| Ingenor | A variation in the spelling of the name: engineer. |
| Inginare | A variation in the spelling of the name: engineer. |
| Ingineer | A variation in the spelling of the name: engineer. |
| Ingineere | A variation in the spelling of the name: engineer. |
| Inginer | A variation in the spelling of the name: engineer. |
| Inginier | A variation in the spelling of the name: engineer. |
| Ingrosser | Is one that buys and sells any thing by wholesale. [According to A New Law Dictionary, by Giles Jacob, 1744] |
| Innholder | Another name for: innkeeper. |
| Innkeeper | One who keeps an inn or public house for the accomodation of travellers and others; an innholder, a taverner. |
| Innkeeperess | A female innkeeper. |
| Insectator | A prosecutor or adversary at law. [According to A New Law Dictionary, by Giles Jacob, 1744] |
| Intelligencer | A bringer of news; a messenger; an informant; a newsmonger. |
| Intendant | One who has the charge, direction, or superintendence of a department of public business, the affairs of a town or province, the household of a prince or nobleman, etc.; a superintendant, a manager. |
| Ioigner | A variation in the spelling of the name: joiner. |
| Ioiner | A variation in the spelling of the name: joiner. |
| Ionour | A variation in the spelling of the name: joiner. |
| Ionyowre | A variation in the spelling of the name: joiner. |
| Iouelere | A variation in the spelling of the name: jeweler |
| Ioweler | A variation in the spelling of the name: jeweler |
| Ioweller | A variation in the spelling of the name: jeweler |
| Ioyler | A variation in the spelling of the name: jailor. |
| Ioynar | A variation in the spelling of the name: joiner. |
| Ioyner | A variation in the spelling of the name: joiner. |
| Ioynor | A variation in the spelling of the name: joiner. |
| Ioynour | A variation in the spelling of the name: joiner. |
| Iremonger | A variation in the spelling of the name: ironmonger. |
| Iremunger | A variation in the spelling of the name: ironmonger. |
| Irenmonger | A variation in the spelling of the name: ironmonger. |
| Iremongyr | A variation in the spelling of the name: ironmonger. |
| Irmongere | A variation in the spelling of the name: ironmonger. |
| Irenmonger | A variation in the spelling of the name: ironmonger. |
| Iron-founder | One who founds or casts iron. |
| Ironist | One who uses iron weapons. |
| Ironmaster | The master of an iron foundry or ironworks; a manufacturer of iron, esp. on a large scale. |
| Ironmonger | A dealer in ironware; a hardware merchant. |
| Ironmounger | A variation in the spelling of the name: ironmonger. |
| Ironsmith | An artificer in iron; a blacksmith. |
| Iron-worker | One who works in iron; one engaged at ironworks. |
| Ismonger | A variation in the spelling of the name: ironmonger. |
| Itinerant | One who itinerates or travels from place to place, esp. in the pursuit of a trade or calling: a travelling preacher, strolling player, etc. |
| Iueler | A variation in the spelling of the name: jeweler |
| Iuelere | A variation in the spelling of the name: jeweler |
| Iuellar | A variation in the spelling of the name: jeweler |
| Iueller | A variation in the spelling of the name: jeweler |
| Iuellere | A variation in the spelling of the name: jeweler |
| Iuelour | A variation in the spelling of the name: jeweler |
| Iunour | A variation in the spelling of the name: joiner. |
| Iuweler | A variation in the spelling of the name: jeweler |
