Can you change depth of field after the shot if you captured in RAW?

Not from a single normal RAW file. Depth of field is primarily determined when the photo is taken, especially by the lens aperture and focus distance. A RAW file only records the light that already reached the sensor, so you can’t truly go back and change the aperture or real optical blur afterward.

There are a few partial exceptions/workarounds:

• You can add artificial blur in editing, but it often looks less natural, especially around edges and with subjects at different distances.
• If you shoot multiple frames with different focus points or settings, you may be able to combine them later for a different overall result. This requires the camera to stay still and works poorly with moving subjects.
• Light-field or similar multi-shot/post-focus systems can allow some after-the-fact focus or depth-of-field control, but that’s different from editing a standard single RAW capture.

So: RAW gives lots of flexibility for exposure, white balance, and tonal adjustments, but not true depth-of-field changes from one ordinary photo.