Overview of ATLAS B-Physics Prospects

We report on the prospects for B-physics measurements with the ATLAS detector at the LHC. The experiment will be able to collect large samples of exclusive decays containing \jpsi. Competitive measurement of $\sin(2\beta)$ using $B^0_d \ra \jpsi\ \ks$ and good sensitivity to new physics in $B^0_s \ra \jpsi\ \phi^0$ are expected. ATLAS will also be sensitive to rare decays $B^0_{d,s} \ra \mumu$ and $B^0_{d,s} \ra \mumu X$. Useful measurements in hadronic decay channels such as $B^0_{s,d} \ra h^+h^-$, $B^+ \ra K^+K^+\pi^-$ and $B^0_s \ra D^-_s \pi^+$ are also possible. The expected precision in these and other channels is presented.