| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 141 | Cesare | Italian | Long haired. | M | |
| 142 | Cesario | Italian | Variant of Caesar. | M | |
| 143 | Chiara | Italian | Light. Variant of Clare. | F | |
| 144 | Ciana | Italian | Feminine variant of John. | F | |
| 145 | Cinzia | Italian | Variant of Greek name Cynthia - one of the names of the mythological mood goddess Artemis referring to her birth on Mount Cynthus. | F | |
| 146 | Cira | Italian | Sun. Variant of Cyril. | F | |
| 147 | Ciri | Italian | Variant of Cyril. | F | |
| 148 | Clariee | Italian | Clear. | F | |
| 149 | Clariss | Italian | Clear. | F | |
| 150 | Clarissa | Italian | Clear. | F | |
| 151 | Claudina | Italian | Feminine form of Claude: lame. | F | |
| 152 | Columbine | Italian | Dove. | F | |
| 153 | Concetta | Italian | From the Latin Cencepta, meaning conceived, a reference to the Immaculate Conception. | F | |
| 154 | Concetto | Italian | Reference to the Immaculate Conception. | M | |
| 155 | Consolata | Italian | Consolation. | F | |
| 156 | Constansie | Italian | Constancy; steadfastness. | F | |
| 157 | Constantia | Italian | Constancy; steadfastness. | F | |
| 158 | Constantin | Italian | Firm. | M | |
| 159 | Constantina | Italian | Constancy; steadfastness. | F | |
| 160 | Constanza | Italian | Constancy; steadfastness. | F | |