As a kid, I'd say Where the Red Fern Grows. Since having a dog as an adult, which we had to put to sleep last Jan., I'd probably full on cry after reading it.
As and adult, the only book I can remember making me teary eyed is the Star Wars Wraith Squadron book (forgot the exact one) where
It sounds stupid, but Aaron Allston writes so well and you care about the characters.
As and adult, the only book I can remember making me teary eyed is the Star Wars Wraith Squadron book (forgot the exact one) where
Ton Phanan dies.