NATIONAL SANDWICH DAY National Sandwich Day is observed annually on November 3. The sandwich is believed to be the namesake of John Montagu, 4th Earl of Sandwich, following the claim that he was the inventor of the sandwich. This day honors one of America’s most popular lunch items. Share this:EmailPrintRedditFacebookPocketTwitterLinkedInTumblrPinterestGoogleLike this:Like Loading... Related Leave a Reply Cancel reply Enter your comment here... Fill in your details below or click an icon to log in: Email (required) (Address never made public) Name (required) Website You are commenting using your WordPress.com account. ( Log Out / Change ) You are commenting using your Google+ account. ( Log Out / Change ) You are commenting using your Twitter account. ( Log Out / Change ) You are commenting using your Facebook account. ( Log Out / Change ) w Cancel Connecting to %s Notify me of new comments via email.