| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 521 | Stansie | Italian | Constant. | F | |
| 522 | Stefano | Italian | Italian form of Stephen 'crowned with laurels'. | M | |
| 523 | Stephano | Italian | Crown; wreath. Variant of Stephen. | M | |
| 524 | Susanna | Italian | Variant of Hebrew Susannah. | F | |
| 525 | Tazia | Italian | Abbreviation of Anastasia: one who will be reborn. | F | |
| 526 | Teodora | Italian | Gift from God. | F | |
| 527 | Teodoro | Italian | God given. | M | |
| 528 | Teresa | Italian | Harvester. | F | |
| 529 | Teresina | Italian | Variant of Theresa which is a popular saint's name of uncertain meaning. | F | |
| 530 | Terza | Italian | Born third. | F | |
| 531 | Tiberia | Italian | From the Tiber. | F | |
| 532 | Tiberio | Italian | From the Tiber. | M | |
| 533 | Tito | Italian | Giant. | M | |
| 534 | Tommaso | Italian | Italian form of Thomas 'twin'. | M | |
| 535 | Torre | Italian | Tower. | M | |
| 536 | Traviata | Italian | Astray. | F | |
| 537 | Trilby | Italian | Sings with trills. | F | |
| 538 | Trillare | Italian | Sings with trills. | F | |
| 539 | Trista | Italian | Sad. | F | |
| 540 | Uso | Italian | Intelligent. | M | |