Members of the First Presbyterian Church of Tiffin actively participate in:

• Habitat for Humanity – Tiffin & Paducah
• Bloodmobile (twice a year)
• Sharing Kitchen (two sessions per year)

In addition to general mission giving, the church supports the following missions with money and materials:

• The Seminary Fund
• The Tanner Mission (Romania)
• Blanket Appeal (Church World Service)
• The Rev. Bill Yoder (Thailand)
• Cook Theological Center (Arizona)
• The Salvation Army
• Bethany House
• Hospice
• FISH
• Seneca County Red Cross
• Easter Seals of Seneca County
• Louisville Seminary
• Patchwork House
• Princeton Seminary
• Resurrection Presbyterian Church
• Senior Community Services of Tiffin
• Tiffin Teen Center
• Weekday Religious Committee