Festival program director Caroline Moore has unveiled a list of Celtic artists in the latest performer announcement.

Irish singer-songwriter Susan O'Neill is a multi-instrumentalist who plies her trade playing guitar, harmonica, trumpet and loop pedal.

While it will be her first solo appearance at the festival, O'Neill was part of Sharon Shannon's band that played in Port Fairy this year.

Bran and Diarmuid Mac Gloinn hail from County Carlow in Ireland and as a collective are Ye Vagabond.

A highlight for Ye Vagabond was performing with renowned Irish performer, and Port Fairy Folk Festival regular, Glen Hansard.

Australian-Scottish band Claymore will be returning to Port Fairy while duo The Jellyman's Daughter will travel from Scotland for the festival.

The Langan Band and Fara will be making the trip to the festival from the UK.

Startijenn is a French Celtic outfit that has been performing together since 1997.

Ms Moore said Startijenn promised to be a highlight of the 2020 festival.

"France has such a strong Celtic tradition which has influenced music in that country over centuries," Ms Moore said.

"I am so excited to have Startijenn coming, they sing in French which will be a real highlight."

Ms Moore's global search for Celtic music also led her to Canada and the signing of guitarist Tony McManus and four-piece band Coig.

She said watching Coig live on stage in Canada was a memorable experience.

"Coig are going to be beautiful," Ms Moore said.

"I was just blown away when I saw them live, they are incredibly talented."

Ms Moore said the festival was aware of its rich historic Celtic links.

She said this heritage will ensure Celtic music remains part of the program.

"The festival has always made Celtic music very accessible," Ms Moore said.

"It has been a great forum for the collision of traditional and contemporary Celtic music and culture."