Mikle was pictured carrying his twin daughters while holding up an small placard, which had the word 'Hope' written on it, as he showed his support for the campaign, while encouraging others to join in.
He shared the photo, commenting:
"One word to one world. HOPE a message to little Hope and all the children in the world, join the campaign and send your own message!"
The campaign is also in support of charitable work of Loven, the danish woman who had been reported to have saved the life if a little boy named Hope, who had been abandoned over the "witch child" stigma in Uyo, Akwa Ibom.
Little Hope who has now received the necessary medical help, looks very little like the malnourished child Loven had rescued weeks back.
Mikel also shared other super adorable photos of Mia and Ava.
The Nigerian born, Chelsea footballer and wife, Olga Diyachenko, had welcomed their twin daughters, in September 2015.
See photos above.
Watch Mikel Obi in video clip below: