Read the package name of an Android APK

aapt dump badging <path-to-apk> | grep package:\ name

Based on @hackbod answer ... but related to windows.

aapt command is located on Android\SDK\build-tools\version. If you need more info about what is appt command (Android Asset Packaging Tool) read this https://stackoverflow.com/a/28234956/812915

The dump sub-command of aapt is used to display the values of individual elements or parts of a package:

aapt dump badging <path-to-apk>

If you want see only the line with package: name info, use findstr

aapt dump badging <path-to-apk> | findstr -n "package: name" | findstr "1:"

Hope it help other windows user!

If you are looking at google play and want to know its package name then you can look at url or address bar. You will get package name. Here com.landshark.yaum is the package name

 https://play.google.com/store/apps/details?id=com.landshark.yaum&feature=search_result#?t=W251bGwsMSwyLDEsImNvbS5sYW5kc2hhcmsueWF1bSJd

Install the apk on your Android device. Then

you can launch adb shell and execute pm list packages -f, which shows the package name for each installed apk.

This is taken from Find package name for Android apps to use Intent to launch Market app from web.