Grandfather, Grandmother dream meaning is explained below using 2 different sources. Each interpretation is shown with its source.

Interpretation 1 — Garuda

Vision: If you are talking to either one: you have made a wise decision, and a specific project is going to be successful.

If both your grandparents are deceased: expect to get help in a certain matter, or you have decided to live a more prudent life.

Depth Psychology: Grandparents represent the wisdom that is available to you.

If you use good judgment in the things you do, everything will turn out all right.

Source: Dreamers Dictionary Author: Garuda

Interpretation 2 — Betty Bethards

Wiser, more mature masculine or feminine parts of self.
Source: The Dream Books Symbols Author: Betty Bethards