In this note, we report five new UV laser transitions of chlorine: 394.3 nm, 367.0 nm, 365.7 nm, 307.7 nm and 306.3 nm, among which the 394:3 nm one is the strongest. It is observed that the gain of 263.3 nm transition is higher than 30% per. metre and the transition energy levels of this line are also identified.