World hunger will be the subject of three separate programs this week, highlighted by a three-day seminar at Holy Trinity Church in Georgetown.

Harry Walters, food and agricultural adviser to the World Bank, will lead the program Tuesday with "The Problem of Feeding the World."

Sen. Mark O. Hatfield, (R-Ore), will speak on "The Institutional Responses," Wednesday and Frances Moore Lappe, author of "Diet For a Small Planet," will discuss on Thursday "Personal Responses" to hunger. Lectures begin at 8 p.m. in the parish theater, 3520 O St. NW.

A Hunger Awareness Meal at 1:30 p.m., Sunday at The Meeting House is planned to "help people begin to understand how it feels for some to eat little while others eat much, and challenge us for solutions." For further information, call 997-5286.

Bread for the World will sponsor a "supper mass," with participants attending the Catholic service in place of eating dinner, donating the money saved to SOME (So Others Might Eat). A discussion of hunger in Montgomery County with Lon Dring, of the Community Ministry of Montgomery County, will follow. The program is at 7:30 p.m., Wednesday at St. John the Baptist Church, 12319 New Hampshire Ave., Sliver Spring.