Surname H
| SURNAME | TOWNSHIP | RESEARCHER |
| Haas | Zion 1920-Present | Nancy Cheesbrough |
| Hacker | Ken Winterberger | |
| Haese | Waukegan | Jayne Adams Piehl |
| Hagan | Aly Koepsel | |
| Haink | Marilynn Wienke | |
| Hall | Sharon L. Cantrall | |
| Hammerick | Antioch | Joey Clarke-Jordan Van Us |
| Hangebrauck | Ruth Streed Filstead | |
| Hanke | Antioch | Dawn (Hanke) Knauft |
| Harding | Susan Boni Reedy | |
| Harris | Libertyville Twp. | Barbara Mivshek |
| Harrison | Antioch area | Jayne Adams Piehl |
| Harmon | Jim Lee | |
| Hart | North Chicago, 1930s-1950s | Gloria J. Karau |
| Hastings | 1890 - Antioch | wayne and judy matrisch |
| Hautaluoma | Waukegan; 1904-1925 | Lauren |
| Heal | Mary Lou Heal Gdowski | |
| Held | Diane Boydstun | |
| Hendee | Eric Groenke | |
| Henneman | Buffalo Grove | Gretchen Leisen |
| Herauer⁄Heraver | Waukegan; early 1900s | Sherese Williams |
| Herberger | Stephanie Sampson | |
| Hertel | Tom Wagner | |
| Heuhl | Northfield | Liz Cwiklik |
| Hillebrand | Patti Fellows | |
| Hofmeister | Ruth Streed Filstead | |
| Hole | Deerfield | Roger Peterson |
| Holloway | MMVINDY1 | |
| Horan⁄Horen | Lake County, ca 1855 - ca 1905 | Phil Smith |
| Hughes | Millburn area, 1840s | Jayne Adams Piehl |
| Huguelet | Lisa Traut | |
| Hungerford | Waukegan | Kenneth L. Drennen |
| Hurteau | Waukegan; 1857-1861 | Shar Bartlett |
| Hutchinson | Linda Doty |