| Election Name: | United States House of Representatives elections in New Jersey, 1798 |
| Country: | New Jersey |
| Type: | legislative |
| Ongoing: | no |
| Previous Election: | United States House of Representatives election in New Jersey, 1797 |
| Previous Year: | 1797 |
| Next Election: | United States House of Representatives election in New Jersey, 1800 |
| Next Year: | 1800 |
| Seats For Election: | All 5 New Jersey seats to the United States House of Representatives |
| Election Date: | October 10, 1798 |
| Party1: | Democratic-Republican |
| Last Election1: | 0 |
| Seats1: | 3 |
| Seat Change1: | 3 |
| Popular Vote1: | 10,035 |
| Percentage1: | 52.4% |
| Party2: | Federalist Party (United States) |
| Last Election2: | 5 |
| Seats2: | 2 |
| Seat Change2: | 3 |
| Popular Vote2: | 9,132 |
| Percentage2: | 47.6% |
| Map Size: | 200px |
Elections to the United States House of Representatives in New Jersey for the 6th Congress were held October 10, 1798.
All previous elections had been held on an at-large basis. Five Federalists had been elected in the previous election. For this election, New Jersey switched, for the first time, to using districts.
Three incumbents ran for re-election, of whom, two of whom lost to Democratic-Republicans. The incumbents Jonathan Dayton (F) and Thomas Sinnickson (F) did not run for re-election. In the districts with no incumbents, one was won by a Democratic-Republican and the other by a Federalist, for a net gain of 3 seats by the Democratic-Republicans
| District | colspan="3" | Democratic-Republican | colspan="3" | Federalist | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| [1] | John Condit | 3,378 | 52.5% | James Schureman (I) | 3,054 | 47.5% | ||||
| [2] | Aaron Kitchell | 3,399 | 72.5% | Mark Thomson (I) | 1,287 | 27.5% | ||||
| [3] | James Linn | 1,613 | 51.3% | Samuel R. Stewart | 979 | 31.1% | ||||
| Archibald Mercer | 554 | 17.6% | ||||||||
| [4] | Thomas Henderson | 379 | 19.0% | James H. Imlay (I) | 1,614 | 81.0% | ||||
| [5] | Jonathan Elmer | 1,266 | 43.5% | Franklin Davenport | 1,644 | 56.5% | ||||