The answer depends on various factors. If the dimmer switch is compatible with the electrical load, the wiring can be adjusted to accommodate the dimmer switch, and the necessary safety measures are taken, it can be done safely. However, it is important to consider the mentioned safety considerations and consult an electrician if unsure about the compatibility or installation process.While it is possible to substitute a two-way light switch with a dimmer switch, it must be approached with caution to ensure safety. The compatibility of the dimmer switch with the electrical load, wiring adjustments, and the requirement of a neutral wire are all critical factors that need attention. Seeking professional assistance is recommended to ensure compliance with safety regulations and to verify the feasibility of substituting the two-way switch with a dimmer switch, ultimately enhancing the lighting control in your living space safely.