Powder metallurgy is a potentially cost-effective alternative to the conventional manufacturing of titanium. This technology has the advantage of near-net-shape formation and non-requirement of high processing temperatures above the alloy melting point compared to the conventional manufacturing. It should be noted that titanium manufacturing by powder metallurgy has structural features - porosity, which negatively effects its corrosion resistance. It limits using low-cost porous titanium instead of wrought one in the chemical industry. In these studies, it was proposed to improve the corrosion resistance of porous titanium (porosity~) by thermo-chemical treatment (nitriding, oxidation, carbooxidation, and carbonitriding). The corrosion resistance of surface-treated porous titanium was evaluated by the static immersion test according to ASTM Standard G31-72(2004) in 20 wt.% HCl and 40 wt. % H2SO4 solutions. The wrought titanium produced by conventional technology was also used as a benchmark for comparison. Carboxide and carbonitride coatings formed on porous titanium were found to be either ineffective (20% HCI) or provide very low protection (40 % H2SO4), which was attributed to the formation of inhomogeneous surface protective films as a result of the poor interaction of surface pores with a multi-component environment, containing gas and powder components. Instead, oxidation and nitriding reduce the corrosion rate of porous titanium by 2–3 orders compared to untreated ones. In addition, the corrosion resistance of surface-treated porous titanium is approximately the same as for surface-treated wrought titanium.