Ferdinand "Thirdy" Crisologo Ravena III[1] (born December 17, 1996) is a Filipino professional basketball player for Dubai BC of the ABA League.

He plays the shooting guard position and is listed at 6 ft 2 in (1.89 m)[3] Ravena was born on December 17, 1996, in Iloilo City, Philippines.

This was officially Thirdy's second playing year where he led the Blue Eagles to the 2nd Seed with a 10–4 win loss record and faced the FEU Tamaraws in the semifinals.

[4] Due to travel restrictions imposed as a response to the COVID-19 pandemic, Ravena was only able to leave the Philippines for Japan in October 2020.

[22] In his debut for the San-en NeoPhoenix, he put up 13 points, 3 rebounds, and 3 assists in an 83-82 win over the Shimane Susanoo Magic.

[27] On October 2, he faced his brother Kiefer and the Shiga Lakestars during the first game of the season, recording 11 points and 6 rebounds in a 93–83 loss.

[28] On July 30, 2024, Ravena signed a one-year contract for Emirati club Dubai BC of Europe-based ABA League.

[2] Ravena has played for the Philippine national team at the 2019 FIBA Basketball World Cup Asian qualifiers.