Free radical scavenging activity of the marine red algae Chondrococcus hornemanni and Spyridia fusiformis were performed using the DPPH photometric assay. They are potential as natural sources of antioxidants and have gained recent attention. This study focuses on determining the antioxidant properties of the different solvent extracts, namely chloroform, methanol and aqueous. In general Spyridia fusiformis extract possesses high antioxidant activity followed by Chondrococcus hornemanni which might be helpful in preventing or slowing the progress of various oxidative stress related disorders. The present study suggests that different solvent extracts contain different antioxidant compounds able to scavenge free radicals.