The rise in sales came as major markets, especially China, pumped up demand for Vietnamese crabs, the Vietnam Association of Seafood Exporters and Producers (VASEP) said in a report.
Japan was also a major market as Vietnamese high-quality crabs are priced competitively there.
Crab exports are expected to hit $300 million for the whole year.
Fishery exports in total rose 8.5% to $7.16 billion in the first nine months. Shrimps led the gain with a 10.5% growth.
VASEP forecasts that Vietnam's seafood exports in 2024 can grow 7% to $9.5 billion, with shrimp, pangasius, tuna, squid and octopus making up the bulk of delivery.