Isak Otto Andersson

{{Short description|Finnish politician}}

{{For|the 21st century member of the Finnish Parliament|Otto Andersson (Finnish politician)}}

{{Expand Finnish|date=October 2024}}

Isak Otto Andersson (10 April 1881 in Munsala – 16 September 1925) was a Finnish farmer and politician. He was a member of the Parliament of Finland from 1919 to 1922, representing the Social Democratic Party of Finland (SDP).{{cite web|url=https://www.eduskunta.fi/FI/kansanedustajat/Sivut/910264.aspx|title=Eduskunta - kansanedustajat|publisher=Eduskunta.fi|accessdate=21 October 2014}}