  This Thesis is devoted to the study of the phenomenology of the Higgs sector
of the minimal $B-L$ extension of the Standard Model at present and future
colliders. Firstly, the motivations that call for the minimal $B-L$ extension
are summarised. In addition, the model is analysed in its salient parts.
Moreover, a detailed review of the phenomenological allowed Higgs sector
parameter space is given. Finally, a complete survey of the distinctive Higgs
boson signatures of the model at both the Large Hadron Collider and the future
linear colliders is presented.
