Yes. In Lightroom’s Export dialog, you can set File Settings > Format to Original to export the source file in its original state.

If you specifically need an edited-format output such as a JPEG at a chosen size, a practical workflow is to create a virtual copy, reset that copy, export it, and then delete the virtual copy if you no longer need it.

Another temporary method is to copy the “before” settings to the current image, export it, then undo the change—but virtual copies are usually cleaner for batch before/after work.

So, use Original format when you want the untouched source file, and use a reset virtual copy when you need an unedited rendered export like JPEG.