Sibling Names Starting With I
16 US sibling names beginning with I, each linking to scored sibling name pairings. Sorted A–Z; switch to popularity below.
- Ian Best sibling match: Leah (85) middle names
- Ibrahim Best sibling match: Ezequiel (88) middle names
- Iker Best sibling match: Carson (80) middle names
- Iris Best sibling match: Daisy (88) middle names
- Isaac Best sibling match: Michael (90) middle names
- Isabel Best sibling match: Katherine (88) middle names
- Isabella Best sibling match: James (79) middle names
- Isabelle Best sibling match: Rosalie (87) middle names
- Isaiah Best sibling match: Adriel (88) middle names
- Isla Best sibling match: Dylan (80) middle names
- Ismael Best sibling match: Jesus (90) middle names
- Israel Best sibling match: Samson (90) middle names
- Itzel Best sibling match: Amaya (85) middle names
- Ivan Best sibling match: Javier (88) middle names
- Ivory Best sibling match: Caspian (90) middle names
- Ivy Best sibling match: Leo (88) middle names
No names match those filters.
I names by the numbers
I names went to 31,505 US boys (1.84%) and 46,839 US girls (2.91%) born in 2025, according to Social Security records. For boys that is up from 0.81% in 1990; for girls, up from 0.5% in 1990.
| Name | For | Rank in 2015 | Rank in 2025 |
|---|---|---|---|
| Isaac | boys | #31 | #47 |
| Isaiah | boys | #49 | #57 |
| Ian | boys | #76 | #83 |
| Isabella | girls | #5 | #7 |
| Isla | girls | #142 | #28 |
| Ivy | girls | #130 | #39 |
Isla has risen furthest of the ranked names here, from #142 for US girls in 2015 to #28 in 2025.
On the sibling pages, a brother or sister name that also starts with I scores lower, because two I names are easy to mix up when you call them together.
Sibling Names starting with I
This page lists 16 sibling names beginning with the letter I that are in real current use in the United States — including popular picks like Isabella, Isla, Ivy. The count comes from US Social Security Administration public records: every name shown was given to at least a handful of US babies in the latest year, so this is not a list of invented or one-off spellings.
Open any name to see its pairing page — brother and sister names that go with it, each scored for how well it fits. Use the sort control above to switch between A–Z and 2025 popularity. To browse a different letter, go back to all sibling names.