diff --git a/.chloggen/564.yaml b/.chloggen/564.yaml
new file mode 100644
index 0000000000..777f5f8b7b
--- /dev/null
+++ b/.chloggen/564.yaml
@@ -0,0 +1,22 @@
+# Use this changelog template to create an entry for release notes.
+#
+# If your change doesn't affect end users you should instead start
+# your pull request title with [chore] or use the "Skip Changelog" label.
+
+# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
+change_type: enhancement
+
+# The name of the area of concern in the attributes-registry, (e.g. http, cloud, db)
+component: process
+
+# A brief description of the change. Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: Add additional attributes to process attribute registry
+
+# Mandatory: One or more tracking issues related to the change. You can use the PR number here if no issue exists.
+# The values here must be integers.
+issues: [564]
+
+# (Optional) One or more lines of additional information to render under the primary note.
+# These lines will be padded with 2 spaces and then inserted directly into the document.
+# Use pipe (|) for multiline entries.
+subtext:
diff --git a/docs/attributes-registry/process.md b/docs/attributes-registry/process.md
index 280cb7e851..0d0e005b66 100644
--- a/docs/attributes-registry/process.md
+++ b/docs/attributes-registry/process.md
@@ -11,12 +11,27 @@
 | `process.command` | string | The command used to launch the process (i.e. the command name). On Linux based systems, can be set to the zeroth string in `proc/[pid]/cmdline`. On Windows, can be set to the first parameter extracted from `GetCommandLineW`. | `cmd/otelcol` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
 | `process.command_args` | string[] | All the command arguments (including the command/executable itself) as received by the process. On Linux-based systems (and some other Unixoid systems supporting procfs), can be set according to the list of null-delimited strings extracted from `proc/[pid]/cmdline`. For libc-based executables, this would be the full argv vector passed to `main`. | `[cmd/otecol, --config=config.yaml]` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
 | `process.command_line` | string | The full command used to launch the process as a single string representing the full command. On Windows, can be set to the result of `GetCommandLineW`. Do not set this if you have to assemble it just for monitoring; use `process.command_args` instead. | `C:\cmd\otecol --config="my directory\config.yaml"` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `process.creation.time` | string | The date and time the process was created, in ISO 8601 format. | `2023-11-21T09:25:34.853Z` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
 | `process.executable.name` | string | The name of the process executable. On Linux based systems, can be set to the `Name` in `proc/[pid]/status`. On Windows, can be set to the base name of `GetProcessImageFileNameW`. | `otelcol` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
 | `process.executable.path` | string | The full path to the process executable. On Linux based systems, can be set to the target of `proc/[pid]/exe`. On Windows, can be set to the result of `GetProcessImageFileNameW`. | `/usr/bin/cmd/otelcol` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `process.exit.code` | int | The exit code of the process. | `127` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `process.exit.time` | string | The date and time the process exited, in ISO 8601 format. | `2023-11-21T09:26:12.315Z` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `process.group_leader.pid` | int | The PID of the process's group leader. This is also the process group ID (PGID) of the process. | `23` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `process.interactive` | boolean | Whether the process is connected to an interactive shell. |  | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
 | `process.owner` | string | The username of the user that owns the process. | `root` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
 | `process.parent_pid` | int | Parent Process identifier (PPID). | `111` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
 | `process.pid` | int | Process identifier (PID). | `1234` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `process.real_user.id` | int | The real user ID (RUID) of the process. | `1000` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `process.real_user.name` | string | The username of the real user of the process. | `operator` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
 | `process.runtime.description` | string | An additional description about the runtime of the process, for example a specific vendor customization of the runtime environment. | `Eclipse OpenJ9 Eclipse OpenJ9 VM openj9-0.21.0` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
 | `process.runtime.name` | string | The name of the runtime of this process. For compiled native binaries, this SHOULD be the name of the compiler. | `OpenJDK Runtime Environment` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
 | `process.runtime.version` | string | The version of the runtime of this process, as returned by the runtime without modification. | `14.0.2` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `process.saved_user.id` | int | The saved user ID (SUID) of the process. | `1002` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `process.saved_user.name` | string | The username of the saved user. | `operator` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `process.session_leader.pid` | int | The PID of the process's session leader. This is also the session ID (SID) of the process. | `14` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `process.user.id` | int | The effective user ID (EUID) of the process. | `1001` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `process.user.name` | string | The username of the effective user of the process. | `root` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `process.vpid` | int | Virtual process identifier. [1] | `12` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+
+**[1]:** The process ID within a PID namespace. This is not necessarily unique across all processes on the host but it is unique within the process namespace that the process exists within.
 <!-- endsemconv -->
diff --git a/model/registry/process.yaml b/model/registry/process.yaml
index 4279a9e33a..bccb070551 100644
--- a/model/registry/process.yaml
+++ b/model/registry/process.yaml
@@ -17,6 +17,30 @@ groups:
         brief: >
           Parent Process identifier (PPID).
         examples: [111]
+      - id: vpid
+        type: int
+        stability: experimental
+        brief: >
+          Virtual process identifier.
+        note: >
+          The process ID within a PID namespace. This is not necessarily unique
+          across all processes on the host but it is unique within the process
+          namespace that the process exists within.
+        examples: [12]
+      - id: session_leader.pid
+        type: int
+        stability: experimental
+        brief: >
+          The PID of the process's session leader. This is also the session ID
+          (SID) of the process.
+        examples: [14]
+      - id: group_leader.pid
+        type: int
+        stability: experimental
+        brief: >
+          The PID of the process's group leader. This is also the process group
+          ID (PGID) of the process.
+        examples: [23]
       - id: executable.name
         type: string
         stability: experimental
@@ -65,7 +89,43 @@ groups:
         stability: experimental
         brief: >
           The username of the user that owns the process.
-        examples: 'root'
+        examples: ['root']
+      - id: user.id
+        type: int
+        stability: experimental
+        brief: >
+          The effective user ID (EUID) of the process.
+        examples: [1001]
+      - id: user.name
+        type: string
+        stability: experimental
+        brief: >
+          The username of the effective user of the process.
+        examples: ['root']
+      - id: real_user.id
+        type: int
+        stability: experimental
+        brief: >
+          The real user ID (RUID) of the process.
+        examples: [1000]
+      - id: real_user.name
+        type: string
+        stability: experimental
+        brief: >
+          The username of the real user of the process.
+        examples: ['operator']
+      - id: saved_user.id
+        type: int
+        stability: experimental
+        brief: >
+          The saved user ID (SUID) of the process.
+        examples: [1002]
+      - id: saved_user.name
+        type: string
+        stability: experimental
+        brief: >
+          The username of the saved user.
+        examples: ['operator']
       - id: runtime.name
         type: string
         stability: experimental
@@ -87,3 +147,26 @@ groups:
           An additional description about the runtime of the process, for example
           a specific vendor customization of the runtime environment.
         examples: 'Eclipse OpenJ9 Eclipse OpenJ9 VM openj9-0.21.0'
+      - id: creation.time
+        type: string
+        stability: experimental
+        brief: >
+          The date and time the process was created, in ISO 8601 format.
+        examples: ['2023-11-21T09:25:34.853Z']
+      - id: exit.time
+        type: string
+        stability: experimental
+        brief: >
+          The date and time the process exited, in ISO 8601 format.
+        examples: ['2023-11-21T09:26:12.315Z']
+      - id: exit.code
+        type: int
+        stability: experimental
+        brief: >
+          The exit code of the process.
+        examples: [127]
+      - id: interactive
+        type: boolean
+        stability: experimental
+        brief: >
+          Whether the process is connected to an interactive shell.