Arjun Sethi (born January 15, 1983) is an American internet entrepreneur, investor and executive.

[6] Sethi became Chief Product Officer in 6waves Lolapps, which went on to raise $35 million in funding from Korean gaming company Nexon.

[15] Yahoo acquired MessageMe in 2014 for a price between $30 million and $40 million, [16] shut down the app MessageMe, and put Sethi and the ex-MessageMe team to work on a Yahoo messaging app meant to compete with Snapchat and WhatsApp.

[17] In early 2016, Sethi left Yahoo to join Social Capital as an investing partner focused on consumer startups.

[17] At Social Capital, Sethi backed the firm's investments in and served on the board of directors of Carta, Relativity Space, Cover, and CryptoMove.

[19] On February 8, 2024, he released Termina, an AI software platform for investors to perform quantitative due diligence on potential investments.

Other Tribe investments include FTX,[30] Kraken,[31] Applied Intuition,[32] EquipmentShare, Pipe Technologies,[33] Docker,[34] Republic,[35] Instabase, and Momentus.

[37] In March 2021, Tribe and Arrow Capital co-sponsored a SPAC raising $240 million, led by Sethi as CEO.

[38][39] Tribe filed plans for a second SPAC IPO later that month, with Odell Beckham Jr. serving as strategic advisor.

[30] In December 2023, he transitioned from CEO of Tribe Capital to chairman and chief investment officer (CIO).