FORTRAN IV with WATFIV in 1973.

Basic - IBM PC, Commodore PET, Apple II

... but the Calculus professor who supposed to teach it had the idea that "Here's how you code a DO loop and here's how you use a WRITE statement... Now numerically integrate problems 10-15" was all we needed to be writing programs and was an effective way to teach programming to people who had never programmed before. As you can imagine is was an utter disaster.

I later took an experimental physics class that required a lot of number crunching. After the first week of class and spending that weekend in the student union guzzling coffee and madly attacking my calculator to compute means, variances, etc. on my calculator, I found a book in the bargain bin at the campus book store -- from the "Plaid" series of computer books (in the '70s) -- and holed up in the library in front of a computer terminal for a couple of evenings, typing in and debugged all the programs listed in it. I was then comfortable enough to tackle the fancier aspects of BASIC armed with a copy of Kemeny & Kurtz's `BASIC Programming' and could plow through the data collected in the physics lab. I did later become a go-to FORTRAN guy at work a few years later. No thanks to that Calc professor, though.

I still write a little FORTRAN -- oh, sorry, that's `Fortran' nowadays -- but haven't touched BASIC since playing around with it on Win386 many years ago. Good riddance to that.

I bought this at a used bookstore in Maryland, and it was the first language I wrote anything actually useful for. I wrote a tip calculator which I use on my pocket computer.

Where I worked in the early 70s, we had an HP 9100 or maybe 9800 desktop calculator lying around under-utilized. I taught myself to program it to make walking "Eat At Joes" sign on the display. Also same company built VERDIN airborne computers (for VLF submarine communications), I taught myself to program that in some kind of machine language.

First real computer programming language, APL on an IBM-370 with Selectric terminals using APL type balls. Circa 1974. Wrote a pretty basic word processor that saved papers, did left & right justification with variable space between words, and flat amazed English professors at junior college.

But... real programmers don't use Pascal.

Funny story: When everyone at work got an IBM PC (Dual floppies, of course. Only managers got XTs) the guy in charge of the engineering group, a computer science grad, bought everyone a copy of MS-Pascal. The first thing all the engineers did was fill out purchase requests for FORTRAN compilers. When I left the company a couple of years later, there were still boxes of MS-Pascal sitting on bookshelves in offices. Still in the shrink-wrap.

BASIC on an RCA Spectra 70/40 mainframe via an ASR 33 teletype.

The fact that so many peoples started with BASIC says something about the age distribution here (as in, we're old!)

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BiTran 6. It was a training language to teach logic gate functions. BASIC was my first consumer language.

Algol-60

ACOS - which I think was this one: https://codelani.com/languages/acos.html

Algol - as a research assistant at University
PL/M86 at my first programming job after Uni.

My first programming language was FORTRAN, which I learned in 1965.

My first programming language, if it can be called that, was "manual OP-CODE / hexadecimal coding" back in the late 1970's, beginning of the 1980's.

Actually, I did do some BASIC on my Commodore 64 as a kid, but I never made anything useful. I got the FORTRAN book about 8 years ago. Fortunately the lessons in the book still work, with little modification.

Applesoft Basic and 6502 assembler.