Sośnicki (feminine: Sośnicka; plural: Sośniccy) is a Polish surname. Notable people with the surname include:
| Language | Masculine | Feminine | |
|---|---|---|---|
| Sośnicki | Sośnicka | ||
| Belarusian (Romanization) | Belarusian: Сасницкі (Sasnitski, Sasnicki) | Belarusian: Сасницкая (Sasnitskaya, Sasnitskaia, Sasnickaja) | |
| Russian (Romanization) | Russian: Сосницкий (Sosnitskiy, Sosnitsky) | Russian: Сосницкая (Sosnitskaya, Sosnitskaia) | |
| Ukrainian (Romanization) | Ukrainian: Сосницький (Sosnitskyi, Sosnitskyy) | Ukrainian: Сосницька (Sosnitska) |