One man, four names. His new colleagues call him 田中さん (Tanaka-san). His old manager calls him 田中くん (Tanaka-kun). His grandmother still calls him たっくん (Takkun), a pet form of his first name, Takuya. His best friend from high school calls him 田中, with nothing on the end at all.
Each of those four people is describing one relationship, and the suffix says which. The bare name says the most. That's the part most honorific charts skip, and it's where English speakers slip.
A quick boundary first. "Japanese honorifics" gets used for two different systems. The suffixes on names are 敬称 (keishō, forms of address). The special verb forms like いらっしゃる and 申す are 敬語 (keigo), which has its own guide to keigo's three layers. This one is about the names: what the four common suffixes mean, then the six places learners reliably get them wrong.
What -san, -kun, -chan and -sama actually mean
さん (-san) is the default. It goes on surnames, first names, men, women, strangers and colleagues, and it's the safe choice with any adult you don't know well. If you only learn one, learn this one.
くん (-kun) is for peers and people below you: a classmate, a younger coworker, a junior in a club. It's warmer than さん and it points down or sideways, never up.
ちゃん (-chan) is for small children, close friends, grandparents (おばあちゃん), and pets. It's the cute one, and that's exactly why it misfires on adults.
様 (-sama) is for customers, clients, gods and the address line on a letter. English Wikipedia's summary groups it with deities and "esteemed clients", and that's roughly how daily life uses it.
All four do one more job English doesn't need: they replace "you". Japanese speakers rarely say あなた to someone's face. They say 田中さんは行きますか, "Are you going, Tanaka?", with the name standing where the pronoun would be. The pronouns post covers why あなた sounds cold.
Why -kun and -chan follow the relationship, whatever the gender
A lot of charts say くん is for boys and ちゃん is for girls. Then you watch a Japanese office drama and a manager calls a young woman 佐藤くん.
That's normal. Japanese Wikipedia's entry on 敬称 says 君 is used mostly with men but also with women, "when a boss addresses a subordinate", and SLJFAQ says the same about junior women at work. The Diet went further. By long custom, members of both houses have called each other 君 in the chamber, women included. When Doi Takako became the first female Speaker of the lower house in 1993, she used さん instead, and さん has been spreading among chairs since, with some male chairs saying in 2021 that 君 sounds pompous.
ちゃん runs the other way. It's mostly for little girls, but a grandmother calling her five-year-old grandson けんちゃん is completely ordinary. What ちゃん signals is "small, dear, or close", and an adult coworker is none of those. In October 2025 the Tokyo District Court ordered a man to pay ¥220,000 to a female ex-colleague in her forties whom he'd called 〇〇ちゃん at work, alongside comments about her looks. The court noted that ちゃん is normally for small children and had no business purpose there.
An adult colleague you aren't close to gets さん. ちゃん says 'child' or 'intimate'.
Why you never put -san on your own name
A classic beginner slip happens in the first ten seconds of a self-introduction.
Honorifics go on other people. On your own name, さん raises you.
A Japanese language school's lesson on さん says using it on yourself "sounds arrogant, as if you are declaring yourself to be a VIP". You know the rule. You still do it. My guess at why: the teacher asks ライヤさんですか？ and you echo the whole thing back, さん included, because English gives you no reflex to strip a title off your own name. "Yes, I'm Mr. Smith" sounds a bit stiff in English. It doesn't sound like you've crowned yourself.
The exceptions are deliberate, and two stand out. 俺様 (ore-sama), -sama on "I", is a villain's line, pure arrogance. SLJFAQ notes that a young woman named Maki might call herself Maki-chan, which is deliberately cute. The phone at work pushes the other way, and you drop even the neutral version: 〇〇社の田中と申します, "This is Tanaka from X Company", bare surname plus a humble verb.
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Try Conversa FreeWhy 先輩さん and 先生さん sound wrong
先輩 (senpai) and 先生 (sensei) are titles, and a title already does the honorific's job. So it's 田中先生, not 田中先生さん, and by the same logic 田中先輩 needs nothing added. The Japanese usage site 日本語大全 puts it plainly: 「先生さん」は普通使わない, "sensei-san isn't normally said", because 先生 already works as an honorific. A native speaker answering on Yahoo! Chiebukuro gives the general version: you can't stack words that already function as honorifics, so 山田先輩 or 山田様, and never 山田先輩様.
先生 is the honorific. Adding さん stacks a second one.
Two things complicate this. First, 先輩 is mostly a school and club word. On HiNative, one native speaker says it was surname + 先輩 in middle and high school, then surname + さん at university. If your senior coworker is 田中, you'll probably hear 田中さん. Second, job titles can take さん from outsiders: Japanese Wikipedia lists 社長さん and 店長さん as common. Inside the company, though, the title stands alone. Staff say 社長 or 田中社長, and Mynavi's business-manners column flags 社長様 as a double honorific.
What -sama means outside anime
In anime, 様 is what a maid calls her master (ご主人様), what a devoted follower calls their idol, and what a villain calls himself. Japanese with Anime has a whole page of these. Pick it up from there and you'll assume -sama means "someone I really, really admire."
In real life it's far more boring, and far more common. You hear it in store announcements addressed to shoppers: お客様, "customer". It's on the envelope: 株式会社〇〇 代表取締役社長 〇〇様, per the Mynavi column. And a business-manners consultant quoted by Otonanswer calls 様 the safest honorific in business email.
様 to a classmate sounds like a maid café. Save it for clients, customers and envelopes.
What dropping the suffix says (yobisute)
The Shogakukan dictionary defines 呼び捨て (yobisute) as calling someone's name without 君, 様 or さん. Look at its example sentence: 部下を呼び捨てにする, "to call one's subordinates by their bare names." The example runs downward. A boss can do it to staff. Staff can't do it back.
Between equals, a bare name has two readings, and Japanese with Anime names both: real closeness, or plain rudeness. Japan Today calls dropping the suffix "a somewhat bold statement". Anime makes it look casual because the characters are usually rivals or best friends, which is exactly the two readings.
So the switch has to be offered. On HiNative, native speakers say bare names are rude with people you've just met or anyone older, and that calling everyone ◯◯さん will never get you called rude. The switch usually looks like this over LINE:
A: 今日ありがとう、ゆいさん！ Thanks for today, Yui-san! B: ゆいでいいよ〜 Just Yui is fine~ A: じゃあ、ゆい！また明日ね。 OK then, Yui! See you tomorrow.
B made the offer. If you want to ask first, なんて呼べばいい？ ("What should I call you?") is the safe version.
Why you drop さん off your own boss in front of a client
Pick up the phone at a Japanese company and a client asks for your department head. You say 田中はただいま席を外しております. No さん, no 部長. To an English ear that sounds like yobisute. It isn't.
The Agency for Cultural Affairs addresses this exact case in its 2007 keigo guidelines (Q24). To a client, 「田中」 is fine and 「部長の田中」 is fine. 「田中部長」 is "inappropriate", because it doesn't treat him as one of yours. And calling him 田中 there is "completely different from yobisute." Your boss is inside (ウチ, uchi); the client is outside (ソト, soto). To an outsider, you lower your whole side, boss included.
Same boss, same news. Facing out, the さん goes and the verb turns humble.
That pair comes from NINJAL, Japan's national Japanese-language institute, answering a reader who found it unnatural. The verb half of the change is keigo, and the keigo post walks through it.
Where -san goes that "Mr." never could
The bakery by the station is パン屋さん. The police officer you ask for directions is お巡りさん. In a picture book, the elephant is 象さん, and in a sales meeting, the client's firm is 〇〇商事さん. English has no "Mr. Bakery". Here さん means "the person or place in that role, treated politely."
Family works the same way. Ask a friend お兄さんいる？ and you've said "Do you have an older brother?" with a polite form. Answer about your own brother and you use the plain one: 兄が一人います. That's the uchi-soto logic again, applied at home.
Should you use -san with Western names, or in English?
A Japanese coworker will call you スミスさん, or ジョンさん if they know you by your first name. In Japanese, go along with it.
In English it's messier. Japan Today's case for it: -san is gender-neutral, handy when you don't know who you're writing to. The case against: it can suggest you think the other person's English is shaky. And if you only use it for Japanese names, you've marked a different kind of relationship, while the consistent version, "I ate dinner with Julie-san and Anthony-san", feels awkward. Their verdict is case-by-case, which is fair.
The default that keeps you safe
Surname plus さん, for everyone, until someone tells you otherwise. Leave it off your own name, off titles like 先生, and off your boss when you're talking to a client. Save 様 for envelopes and customers, and ちゃん for children and friends who've earned it.
And when a Japanese friend finally says ゆいでいいよ, notice what happened. Your Japanese is the same as yesterday. Yui moved you one step closer, and the missing さん is how she told you.