Toss India chose to bat vs Ireland
Harmanpreet said at the toss that left-arm spinner Radha Yadav was unwell and replaced her with legspinning allrounder Devika Vaidya.
A win will confirm a semi-final spot for India, who are placed second on the Group 2 points table. They won two games in a row and suffered a defeat against England in their last outing.
An Ireland victory will interest Pakistan, who could then qualify for the knockouts if they beat England on Tuesday.
Ireland have lost to England, Pakistan and West Indies, and are out of the competition.
India: 1 Shafali Verma, 2 Smriti Mandhana, 3 Jemimah Rodrigues, 4 Harmanpreet Kaur (capt), 5 Deepti Sharma, 6 Richa Ghosh (wk), 7 Devika Vaidya, 8 Pooja Vastrakar, 9 Shikha Pandey, 10 Rajeshwari Gayakwad, 11 Renuka Singh
Ireland: 1 Amy Hunter, 2 Gaby Lewis, 3 Orla Prendergast, 4 Laura Delany (capt), 5 Eimear Richardson, 6 Louise Little, 7 Mary Waldron (wk), 8 Leah Paul, 9 Arlene Kelly, 10 Cara Murray, 11 Georgina Dempsey