Ajinkya Deo (born 17 January 1964) is an Indian actor in Marathi films and is the son of veteran Marathi actor Ramesh Deo and Seema Deo. He was the Prominent figure in Marathi Cinema during 80s and 90s. He appeared over 85 movies in Hindi and Marathi languages. He is the recipient of Maharashtra State Film Award for Best Actor. He made his debut with a role in the Superhit Marathi movie Ardhangi (1985) opposite Archana Joglekar. He emerged as a star with Sarja (1987) and went on to establish himself with his roles in the action films Shabbas Sunbai (1986), Jeeva Sakha (1991), Ghayal (1993), Bajrangachi Kamal (1994) and Vishwavinayak (1994). Deo's other commercially successful films include Majh ghar majha sansar (1986), Sansar (1987), Kashyasathi premasathi (1987), Maherchi Sadi (1991), Bandhan (1991), Lapandav (1993), Vajwa re Vajwa (1993), Kunku (1994), Sarkarnama (1998), Tuch Mazi Suhasini (1999) and Vasudeo balwant phadke (2007). Deo played supporting roles in Jeta (2010), Ringa Ringa (2010), Dubhang (2011), Sau Shashi Deodhar (2014), Raakhandaar (2014), Nati (2014), Tanhaji (2020) and Gharat Ganpati (2024).
Deo was also the executive director of Prabhat Entertainment TV channel. The channel operated from 2000 to 2002.
Deo acted in a Telugu horror film, Deyyam, in 1996 directed by Ram Gopal Varma. Deo has anchored a crime show with Marathi entertainment channel Star Pravah.
He has worked with noted Film director's such as Rajdutt, Kumar Sohoni, Sachin Pilgaonkar, Shrabani Deodhar, Prabhakar Pendharkar, Anant Mane, Girish Ghanekar, Sanjay Jadhav and Om Raut. His chemistry with top Marathi actress of 80s and 90s were appreciated, he done Films with Ashwini Bhave, Varsha Usgaonkar, Nishigandha Wad, Archana Joglekar, Nivedita Saraf and Kishori Shahane.
Dev worked with Ajay Devgan in the 1999 action movie Gair and the 2020 historical action movie Tanhaji.
Deo was born on 17 Jan 1964 in Mumbai, Maharashtra to a Marathi film actor Ramesh Deo and actress Seema Deo. He has a younger brother Abhinay Deo.
Deo married his long time girlfriend, Aarti Deo, in 1986.