Auxetic materials are a particular class of materials which present a negative Poisson ratio (NPR). This means that once they are stretched, they expand in the directions orthogonal to the applied load. The dual behaviour occurs during compression tests. Due to this characteristic, they present many interesting properties like increased resistance to fracture indentation and shear stress, lower crack propagation rate, synclastic behaviour, and the ability to tune their porosity by applying stress. Because of these properties, auxetic materials are gaining the attention of researchers. Their applications are diverse, ranging from automotive and aerospace to medicine and seismic applications. Because of their application potential, it is important to find an effective way to monitor their condition during use. Fibre Bragg grating (FBG) sensors are widely used in Structural Health Monitoring (SHM) applications. They are fascinating in consequence of their unique characteristic like multiplexing ability, resistance to electric and magnetic field interference, high accuracy in measure, chemical inertness that permits their use in harsh environments, and they are also tiny. However, due to the novelty and unique geometry of auxetic materials, monitoring them with FBG sensors presents challenges. In this work, we investigate the possibility of monitoring auxetic materials using FBG sensors.