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We study the possibility of generating non-zero reactor mixing angle$\theta_{13}$ and baryon asymmetry of the Universe within the framework of an$A_4$ flavour symmetric model. Using the conventional type I seesaw mechanismwe construct the Dirac and Majorana mass matrices which give rise to thecorrect light neutrino mass matrix. Keeping the right handed neutrino massmatrix structure trivial so that it gives rise to a (quasi) degenerate spectrumof heavy neutrinos suitable for resonant leptogenesis at TeV scale, we generatethe non-trivial structure of Dirac neutrino mass matrix that can lead to thelight neutrino mixing through type I seesaw formula. Interestingly, such asetup naturally leads to non-zero $\theta_{13}$ due to the existence ofanti-symmetric contraction of the product of two triplet representations of$A_4$. Such antisymmetric part of triplet products usually vanish for righthanded neutrino Majorana mass terms, leading to $\mu-\tau$ symmetric scenariosin the most economical setups. We constrain the model parameters from therequirement of producing the correct neutrino data as well as baryon asymmetryof the Universe for right handed neutrino mass scale around TeV. The $A_4$symmetry is augmented by additional $Z_3 \times Z_2$ symmetry to make sure thatthe splitting between right handed neutrinos required for resonant leptogenesisis generated only by next to leading order terms, making it naturally small. Wefind that the inverted hierarchical light neutrino masses give more allowedparameter space consistent with neutrino and baryon asymmetry data.

Common Origin of Non-zero $\theta_{13}$ and Baryon Asymmetry of the Universe in a TeV scale Seesaw Model with $A_4$ Flavour Symmetry