Sibling names for Jeff
Names that sound like they belong in the same family as Jeff usually share its era. These sister and brother names rose and fell on a similar curve to Jeff, whose busiest decade was the 1960s, and are about as common, so neither child's name will feel dated or unusual next to the other.
Sister names for Jeff
| Name | Meaning | Rank 2025 | Babies, last 5 years | Peak decade |
|---|---|---|---|---|
| Lori | variant of Laurie (Laura) | #1,726 | 709 | 1960s |
| Kim | short form of Kimberly or Kimball | #4,228 | 179 | 1960s |
| Shari | from French chérie, "darling" | #11,780 | 34 | 1960s |
| Terri | #6,303 | 128 | 1960s | |
| Teresa | #911 | 1,589 | 1960s | |
| Robin | pet form of Robert; or the bird | #704 | 1,725 | 1960s |
| Darla | from Darlene; "darling" | #941 | 1,112 | 1960s |
| Cindy | pet form of Cynthia or Lucinda | #1,929 | 569 | 1960s |
| Becky | pet form of Rebecca | #3,992 | 170 | 1960s |
| Penny | #740 | 1,990 | 1960s | |
| Sherry | sherry (wine) or variant of Cherie | #5,532 | 126 | 1960s |
| Tammy | pet form of Tamsin or Tamara | #3,703 | 161 | 1960s |
Brother names for Jeff
| Name | Meaning | Rank 2025 | Babies, last 5 years | Peak decade |
|---|---|---|---|---|
| Tim | short form of Timothy; "honoring God" | #3,230 | 202 | 1960s |
| Greg | short form of Gregory; "watchful" | #4,761 | 121 | 1960s |
| Chris | short for Christopher, Christian or Christina | #646 | 2,005 | 1960s |
| Chuck | #8,381 | 31 | 1960s | |
| Marty | pet form of Martin | #2,914 | 243 | 1960s |
| Darrell | from d'Airel (Norman place name) | #1,691 | 588 | 1960s |
| Mike | short form of Michael | #1,234 | 963 | 1960s |
| Ken | short form of Kenneth | #3,277 | 211 | 1960s |
| Tony | #784 | 1,699 | 1960s | |
| Kirk | "church" | #2,551 | 278 | 1960s |
| Steve | short form of Stephen, 'crown' | #1,617 | 575 | 1960s |
Jeff's era
Jeff ranked #3,342 for boys in 2025, against #2,004 in 2015. Its best year was 1962, at #44. Names that rose and fell with it share its period feel, which keeps the set consistent.
Timeless names that go with any sibling
These names have been used steadily for a hundred years, so they sit comfortably next to a name from any era, Jeff included.
Girls: Elizabeth, Maria, Lydia, Cecilia, Miriam, Nina. Boys: Samuel, Anthony, Wesley, Vincent, Calvin, Victor.
How these were chosen
Each suggestion's share of US babies has followed a curve close to Jeff's since 1880, and its recent number of babies is within about twelve times Jeff's, so the names are in the same league. Names starting with the same letter as Jeff or with the same ending are left out, so the names go together without matching. Spellings of Jeff itself are excluded.