Having checked about 1000 official individual portrait photos of both male & female astronauts, I have compiled a small list of watches seen in those portraits, made publicly available by the space agencies ESA, CNES, DLR and NASA.
For the female astronauts, we can be brief as only a few show a modern black CASIO-like wristwatch and only payload specialist Dianne Prinz clearly wore a Seiko A829
Other wrist watches in official portraits (year the photo was taken):
BULOVA
1962 Carpenter
1964 Cooper
1964 Grissom
1966 Haise
1964 Slayton

BREITLING
1997 Clervoy
2001 Virts
1996 Williams

OMEGA ( Speedmaster )
1972 Bean (gold)
1985 Brand
1986 Brand
1993 Cabana
1971 Cernan
1971 Engle
1986 Engle
2004 Fincke (X-33)
1969 Gordon
2001 Gorie (X-33)
2005 Kelly (X-33)
1974 Leonov (Flightmaster)
1985 Messeschmidt
1970 Mitchell
1999 Perrin (X-33)
1971 Shepard (gold)
1974 Slayton (gold)
1966 Stafford
1972 Stafford (gold)
2005 Vittori (X-33)
2000 Wilmore (X-33)
1971 Young

ROLEX
1970 Carpenter
1970 Borman
1971 Conrad (gold)
1984 Hammond
1971 Swigert (gold)

SEIKO (A829)
1995 Michael Anderson
1984 Brandenstein
1984 Hawley
1985 Merbold
1989 Merbold
1985 Ockels
1988 Ockels
1986 Onizuka
1985 Overmyer
1984 Scully-Power
1986 Shriver
1985 Simon

SINN
1985 Furrer

That's it for now... there're other wristwatches in official portraits, CASIO and problably Hamilton... makes I'm less familiar with

 

To illistrate this topic, two examples of an official individual astronaut portrait where a Seiko A829 can be seen;
Payload specialists Steven Hawley (1984) and George Simon (1985)
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didn't Gus Grissom fly a Seiko Bellmatic?

 

This is that 1964 portrait of Grissom wearing a watch on a JB Champion bracelet... in the B&W version it looks like the edge maybe a Bulova... could even be a Speedy
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Are these all your photos as no reference to NASA or the photographer on any, or in your opening post

 

Those are all ESA, CNES or NASA photos, which I got between 1975 and 1995... made my own scans, but these images belong to the public domain and most can be found online, however in low resolution versions. The size of my 300 DPI scans varies between 1.0 & 6.0 Mb ...
Each photo has a number in which the year is presented (e.g. Photo of Grissom here above = 1964-01b (litho) or S64-32110 (photo) )

 

How could we forget this 1962 portrait of astronaut Scott Carpenter wearing his Bulova Accutron Astronaut tuning fork wrist watch on a stainless steel Kreisler coffin link bracelet ?
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Upon request, for the ( military ) Hamilton fans... However I would have to check if these were ever used aboard a spaceflight mission...

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As Omega will be celebrating the 50th (Gold) anniversary of the Apollo 11 lunar landing mission, I've decided to share some individual official NASA portraits of astronauts proudly wearing their Gold Omega Apollo tribute Speedmaster chronographs...
In alphabetical order, astronaut Alan Bean 1972 portrait for the Skylab space station mission
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Next up is astronaut Alan B Shepard in his US Navy Rear Admiral uniform, photo taken in January 1971 for the Apollo 14 mission
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This is the 1974 official NASA portrait of Chief of the astronaut office Donald "Deke" Slayton in WSS - White Space Suit for the ASTP mission
Note his Gold Apollo tribute Speedmaster chronograph was missing the bezel and he wore a folded Timely calendar pleated over the bracelet
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A few official portraits of LtGeneral astronaut Thomas P. Stafford wearing his Gold Omega Apollo tribute Speedmaster chronograph, WSS taken in 1972 (post Apollo 10 mission). General Stafford was the first member of his Naval Academy Class of 1952 to pin on the first, second and third stars of a General Officer.
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. LtGeneral US Air Force (on both USAF color photos the watch is not visible)

 

Just wanted to include some (non-official) photos showing Apollo 11 astronaut Neil Armstrong wearing his Gold Apollo tribute Speedmaster
The first pair, taken in 1974, show Neil folding a paper airplane while at University of Cincinnati, where Armstrong was University Professor of Aerospace Engineering.
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This photo was taken in Paris 1979 as astronaut Neil Armstrong visited the city of lights to celebrate 10 years Apollo 11 giving a number of talks all over mainland Europe...
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Really interesting thread. Thanks for compiling, and keep 'em coming!

 

One more because of the request here above...
ASTP-commander and Omega Ambassador Thomas Stafford wearing a Gold Apollo tribute Speedmaster chronograph during a press conference in 1973. Deke Slayton wore an Accutron Astronaut tuning fork watch and Vance Brand a steel Omega Speedmaster chronograph, just visible in the first photo... The color of the bezel on Stafford's Gold Omega Speedmaster was obviously burgundy wine colored... as on other photos these Gold watches often appear with a black colored bezel...
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I always wondered about the picture of Stafford in his Apollo 10 space suit with the gold Speedmaster, but now it makes sense...thanks!

 

The official NASA photo of the prime crew for Gemini VIII, David Scott and Neil Armstrong. Looks like a Speedy on Armstrong's wrist.

 

IMHO ... Out of the 60 official Gemini crew photos, this is the best: Gemini VIII prime and back-up crews posing together in 1966.
Probably taken during training, each astronaut wore an Omega Speedmaster, except Charles "Pete" Conrad...
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On November 25, 1969, later in 1972 and 1973, about 35 astronauts received their Gold Apollo Tribute Omega Speedmaster chronograph.
So far there're about a dozen astronauts seen wearing their Gold speedies in time-period photos and searching for photos of NASA astronauts actually wearing their Gold Speedmaster during NASA training I only came to half-a-dozen astronauts:
A few photos of such examples;
1970 Eugene Cernan wore his Gold #18 during Apollo 17 training
1972 Alan Bean wore his Gold #26 during Skylab 3 training
Thomas Stafford regularly wore his Gold #13 during ASTP-training between October 1972 and July 1975
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