  Recent observation of Sagittarius A$^*$ (Sgr A$^*$) by the Event Horizon
Telescope (EHT) collaboration has uncovered various unanswered questions in
black hole (BH) physics. Besides, it may also probe various beyond the Standard
Model (BSM) scenarios. One of the most profound possibilities is the search for
ultralight bosons (ULBs) using BH superradiance (SR). EHT observations imply
that Sgr A$^*$ has a non-zero spin. Using this observation, we derive bounds on
the mass of ULBs with purely gravitational interactions. Considering
self-interacting ultralight axions, we constrain new regions in the parameter
space of decay constant, for a certain spin of Sgr A$^*$. Future observations
of various spinning BHs can improve the present constraints on ULBs.
