Sibling names for Tim
Names that sound like they belong in the same family as Tim usually share its era. These sister and brother names rose and fell on a similar curve to Tim, 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 Tim
| Name | Meaning | Rank 2025 | Babies, last 5 years | Peak decade |
|---|---|---|---|---|
| Debbie | pet form of Deborah, 'bee' | #5,284 | 135 | 1960s |
| Lori | variant of Laurie (Laura) | #1,726 | 709 | 1960s |
| Cindy | pet form of Cynthia or Lucinda | #1,929 | 569 | 1960s |
| Penny | #740 | 1,990 | 1960s | |
| Darla | from Darlene; "darling" | #941 | 1,112 | 1960s |
| Becky | pet form of Rebecca | #3,992 | 170 | 1960s |
| Shari | from French chérie, "darling" | #11,780 | 34 | 1960s |
| Robin | pet form of Robert; or the bird | #704 | 1,725 | 1960s |
| Doreen | from Dora (Dorothy); "gift" | #5,132 | 98 | 1950s |
Brother names for Tim
| Name | Meaning | Rank 2025 | Babies, last 5 years | Peak decade |
|---|---|---|---|---|
| Chuck | #8,381 | 31 | 1960s | |
| Jeff | #3,342 | 215 | 1960s | |
| Greg | short form of Gregory; "watchful" | #4,761 | 121 | 1960s |
| Ken | short form of Kenneth | #3,277 | 211 | 1960s |
| Mike | short form of Michael | #1,234 | 963 | 1960s |
| Marty | pet form of Martin | #2,914 | 243 | 1960s |
| Darrell | from d'Airel (Norman place name) | #1,691 | 588 | 1960s |
| Chris | short for Christopher, Christian or Christina | #646 | 2,005 | 1960s |
| Rick | short form of Richard; "strong ruler" | #3,077 | 216 | 1950s |
| Steve | short form of Stephen, 'crown' | #1,617 | 575 | 1960s |
| Randall | from Randolph: shield wolf | #1,506 | 692 | 1950s |
Tim's era
Tim ranked #3,230 for boys in 2025, against #2,228 in 2015. Its best year was 1959, at #60. 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, Tim included.
Girls: Elizabeth, Maria, Lydia, Cecilia, Julia, Miriam. Boys: Samuel, Anthony, Wesley, Vincent, Calvin, Victor.
Same era, but close to Tim
These names follow Tim's curve too, but we left them out above because they share a first letter or an ending with Tim. Some parents like that echo; if you do, start here.
How these were chosen
Each suggestion's share of US babies has followed a curve close to Tim's since 1880, and its recent number of babies is within about twelve times Tim's, so the names are in the same league. Names starting with the same letter as Tim or with the same ending are left out, so the names go together without matching. Spellings of Tim itself are excluded.