Santiago Daniel Martinez Roa (born 16 August 1995) is a Paraguayan former footballer who played as a midfielder.
On 31 August 2015, Martinez signed a one-year contract with Albanian club Vllaznia Shkodër for an undisclosed fee. He made his Albanian Superliga debut twenty days later, playing full-90 minutes in Vllaznia's 2âÂÂ0 loss against Flamurtari Vlorë. On 4 November, Martinez scored his first goal as a Vllaznia player, netting the second goal of the match against Apolonia Fier in the second match of the second round of 2015âÂÂ16 Albanian Cup, which was proved to be the winner as Vllaznia advanced to the quarter-finals. He was released during the winter transfer window.