Important Note: Apple does not officially distribute macOS as ISO files. They distribute them as .app installers (via the App Store) or .dmg/.pkg packages. To get a bootable ISO (often used for Virtual Machines like VMware, VirtualBox, or Parallels on Windows/Linux), you typically need to create it manually from an official Apple installer.
Yes. All macOS versions from OS X 10.7 Lion (2011) through the latest macOS Sonoma/Ventura are exclusively 64-bit. Apple dropped 32-bit kernel support entirely starting with OS X 10.8 Mountain Lion. Applications must be 64-bit as of macOS Catalina (10.15).
You should always source the base installer directly from Apple to avoid malware risks.
Here’s the immediate reality check: Apple does not provide macOS as an ISO file. Unlike Windows or Linux distributions, Apple distributes its operating system exclusively through the Mac App Store as a .app bundle (for older versions) or a .pkg installer. However, converting that official installer into a 64-bit ISO for virtualization is entirely possible and legal, provided you own Apple hardware.
If you do not have access to a Mac, some users resort to third-party repositories like Archive.org or GitHub, which host pre-made ISOs for legacy versions. Note: These are not official and may carry security risks.
Now you have a 64-bit bootable macOS ISO.