6周年结婚纪念日快乐有很多种，用英文来祝福6周年结婚纪念日快乐也是不错的，将这份祝福写在卡片上，放在花丛的中央，当被祝福的人收到时，定能感到由心的欢喜和温馨满怀。
结婚纪念日的英语写法是wedding day和wedding anniversary。
如果要表达x年结婚纪念日，就可以用英文序数词加上结婚纪念日的英文写法，如果英文表达要用缩写的话一般就会用序数词缩写。数字6的序数词是sixth，缩写则是6th。
因此6周年结婚纪念日的英文缩写可以是：
1、6th wedding day
2、6th wedding anniversary
想要祝福6周年纪念日快乐，且用英文来表达，只需要在6周年结婚纪念日的英语写法前加上“Happy”即可！
1、Happy 6th wedding day
2、Happy 6th wedding anniversary
3、Happy the sixth wedding anniversary
4、Happy the fifth wedding day
5、Happy six years anniversary
6、Happy six-year anniversary
7、Happy Sugar Wedding.结婚6周年也被称为糖婚，因为“七年之痒”尚未到来，婚姻仍然如糖果般甜蜜可口，如蜜汁般香甜。
如果觉得这样的祝福有些单调，在后面也可以加上爱称，譬如：
1、Happy 6th wedding day，my love
2、Happy Sugar Wedding, my sweetie
3、Honey，Happy six-year anniversary
4、To my darling: Happy the sixth wedding anniversary
5、Baby，Happy the fifth wedding day
6、My dear, celebrate for our sixth wedding day！
1、We never knew two people better suited to each other.
我们从未见过如此般配的一对。
2、It was love that brought you two together, love that joined your hearts as one. And may you find with each new year your love has just begun.
是爱情把你们结合在一起，是爱情使你们心连心，愿你们发现，年年岁岁你们都像初萌爱心。
3、I wish you many more anniversaries each happier than the last.
愿你们有更多周年纪念日，一年比一年更幸福。
4、Happy anniversary! May the years ahead fulfill all your hope.
祝结婚周年快乐，愿今后年年如愿以偿。
5、Only once in a lifetime that a special dream comes true. And suddenly your entire world seems beautiful and new. Best wishes always!
一生中只有一次美梦实现的奇迹，你俩的整个世界顿时变得绚丽新奇。祝永远幸福!
6、A hundred years to repair the boat ferry, a thousand years to repair a total pillow sleep. Encounter is not easy, friends more difficult, love is the millennium fate. On this special day, I wish you happiness and love forever!
百年修得同船渡，千年修得共枕眠。相遇不易，相知更难，相爱更是千年缘。在今天这个特别的日子，祝你们永远幸福，恩爱百年！
7、Suddenly found that today is my sixth wedding anniversary ah! I always don't know if the wedding anniversary should be the registration day or the wedding day. Whatever.
忽然发现，今天是我结婚六周年纪念日啊!我总是不知道结婚纪念日应该看登记日还是婚礼日，管它呢，反正都没礼物，就都过呗。
9、Finding your favorite half is a kind of happiness, can and the favorite half in the long and trivial future life, live a wonderful, the tacit understanding, is a greater happiness. May you knock on the door of happiness, keep the happiness for a long time!
找到自己中意的一半是一种幸福，能够和中意的一半在漫长而又琐碎的未来生活中，活出精彩，过的默契，则是更大的幸福。祝你敲开幸福之门的时候，把这份幸福长久的保持下去！
Happy 6th wedding day！