On this special occasion, we stop to appreciate those who have lost their lives in battle, hopefully taking a few moments to count our blessings and show gratitude to everyone who has fought for our freedom.
That's what the following celebrities are doing at least, as we rundown a number of Tweets passed along in relation to this holiday, which brings singers, actors and teen moms together for the same important cause...
Not only did Chuck Norris serve in the Air Force, but he has served as spokesman for the VA and was named the Air Force's Veteran of the Year in 2001. It's unclear if he won any top-secret wars using only his unparalleled martial arts skills.
Before becoming one of the men who took hip hop to the mainstream in the 1990s, Nate Dogg was a munitions specialist in the US Marines. The late rapper once said he joined the military to "see if I was a man."
When 18-year-old James Marshall Hendrix was busted on stolen car charges in 1961, he was given a choice: the Army or prison. He took the former, and later received an honorable discharge for an ankle injury sustained as a paratrooper.
Before he became the ultimate Playboy, Hugh Hefner enlisted in the army as an infantry clerk and won a sharpshooter badge in basic training. While enlisted in Oregon, then Virginia, he drew cartoons for Army newspapers.
During high school, Bill Cosby dropped out to join the Navy, where he worked as a medical aide on ships and in military hospitals. He also became a member of the Navy's track team, and earned his high school diploma while enlisted in the service. After hitting fame in show business, he became an honorary chief hospital corpsman.
All My Children actor and Dancing With the Stars winner J.R. Martinez was known first for his amazing story. After suffering severe burns, losing 34 percent of his body and having to re-learn how to walk following a 2003 strike on his military vehicle, Martinez traveled the U.S. delivering motivational speeches to other injured veterans.
Justin Timberlake: Today we remember our heroes in uniform who made the ultimate sacrifice defending our great nation. Thanks to them we can live freely.
John Stamos: My Uncle Don and Ralph and many other men and woman DIED for our country. These fallen heroes represent the character of our nation. THANK U.
Jenelle Evans: Men AND women who served, #ThankYou . #MemorialDay.
Chloë Grace Moretz: Thank you so much to all the servicemen and women who have gone above and beyond protecting our country. Happy Memorial Day.
Tony Goldwyn: Happy Memorial Day and endless gratitude to our men and women in uniform!!! #freebecauseofyou.
Heidi Montag: Happy Memorial Day! Thank you to everyone who has fought for our freedom! God bless America! In loving memory of my brother Eric O'HARA.
Backstreet Boys: Happy Memorial Day! Shout out to all of the wonderful people who serve America and keep us safe - you are amazing.
Bailee Madison: Happy Memorial Day... I hope you are enjoying this day with your friends & family while remembering those who lost their lives fighting for our freedom... My heart goes out to all the families who lost their loved ones.
Ashley Tisdale: Thank you to all the men and woman who have fought for r country #HappyMemorialDay.