@Faisal Hussain I do not think there is one but definitely there is plan to develop one. https://cwiki.apache.org/confluence/display/NIFI/First-class+Avro+Support You can convert Avro to JSON (ConvertAvroToJSON) and then call a script (lots of example of scripts in the internet for converting JSON to csv using java/javascript/perl/bash/awk etc and etc) in the ExecuteStreamCommand processor. This would work. Let us know if you need more details. ... View more